জব প্রিপারেশন

1851 Math

A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottoms. If the cistern is full, the leak will empty it in ?

A)28 hrs

B)20 hrs

C)40 hrs

D)36 hrs

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1852 Math

A sum of TK. 427 is to be divided among A ,B and C such that 3 times A's share , 4 times B's share and 7 times C's share are all equak The share of C is :

A)140

B)196

C)84

D)240

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1853 Math

A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is TK. 855 ,the total profit is :

A)500

B)2000

C)1000

D)1500

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1854 Math

The air we inhale is a mixture of gases which of the following gases is the mixture is highest in percentage

A)Carbon dioxide

B)Oxygen

C)Ozone

D)Nitrogen

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1855 Math

A man can walk uphill at the rate of 2.5 hm/hr and downhill at the rate of 3.25 km/hr. If the total time required walking a certain distance up the hill and return to the starting position is 4 hr 36 min, what is the distance he walked up the hill?

A)3.5 km

B)4.5 km

C)5.5 km

D)6.5 km

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1856 Math

A, B and C enter into a partnership with a certain capital in which A's contribution is TK. 10,000. If out of a total profit of TK. 1,000, A gets Tk. 500, B gets Tk. 300the C's capital is

A)TK. 4000

B)TK. 3600

C)TK. 4800

D)TK. 4400

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1857 Math

The marked price of an article is TK. 500. It is sold on two successive discounts of 20% and 10% .The selling price of that article is

A)TK. 350

B)TK. 375

C)TK. 360

D)TK. 400

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1858 Math

If

A)2

B)2-Jan

C)2-Jul

D)1

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1859 Math

A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup , How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

A)1.3

B)4-Jan

C)5-Jan

D)7-Jan

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1860 Math

One -fourth of the boys and three -eight of the girls in a school participated in the annual sports. What proportional part of the total student population of the school participated in the annul sports?

A)12-Apr

B)8-May

C)12-Aug

D)None of these

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1861 Math

I f the rate of simple interest is 12% per annum the amount that would fetch interest of TK. 6000 per annum is ?

A)Tk. 50000

B)TK. 7200

C)TK. 72000

D)TK. 7200

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1862 Math

The compound interest on a certain sum of money for 2 years at 10% per annum is TK. 420 . The simple interest on the same sum at the same rate and for same time will be?

A)Tk. 350

B)Tk. 375

C)Tk. 380

D)TK. 400

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1863 Math

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ?

A)2-Jan

B)20-Sep

C)5-Mar

D)15-Aug

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1864 Math

A bag contains 2 red Roses, 4 yellow Roses and 6 pink Roses. Two roses are drawn at random. What is the probability that they are not of same color?

A)6-Jan

B)14/33

C)3-Feb

D)6-May

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1865 Math

The sum of the present ages of a father and his son is 60 years. Five years ago, father's age was four times the age of the son. So now the son's age will be -

A)15 years

B)5 years

C)20 years

D)10 years

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1866 Math

A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is?

A)720

B)1200

C)900

D)1800

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1867 Math

A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod . Find the number of balls.

A)2

B)3

C)4

D)6

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1868 Math

A person's present age is two-fifth of the age of his mother. After 8 years , he will be one- half of the age of his mother . How old is the mother at present ?

A)36 years

B)38 years

C)40 years

D)42 years

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1869 Math

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

A)50% increase

B)25% increase

C)50% decrease

D)75% decrease

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1870 Math

Fresh fruit contains 68% water and dry fruit contains 20% water, How much dry fruit can be obtained from 100 km of fresh fruits?

A)20 kg

B)30 kg

C)35 kg

D)40 kg

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1871 Math

A tap can fill a tank in 6 hours. After half the tank is filled , three more similar taps are opened . What is the total time taken to fill the tank completely?

A)3 hrs 15 min

B)3 hrs 45 min

C)4 hrs 15 min

D)None of these

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1872 Math

The salaries of A , B and C are in the ratio of 1 : 2 : 3 The salary of B and C together is TK. 6000. By what percent is the salary of C more than that of A?

A)100%

B)150%

C)200%

D)250%

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1873 Math

Two numbers are in the ratio 3 : 7 . If 6 be added to each of them, then they are in the ratio 5 : 9 Find the numbers?

A)9 and 21

B)11 and 17

C)7 and 17

D)12 and 23

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1874 Math

A)576

B)1296

C)676

D)1444

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1875 Math

A bag contains 50 P , 25 P and 10 P coins in the ratio 5 : 9 : 4 amounting to TK. 206 .Find the number of coins of each type respectively .

A)360, 160, 200

B)160, 360, 200

C)200, 160, 300

D)200, 360 , 160

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1876 Math

Painter A can paint a house in 16 days and painter B can do the same work in 20 days . With the help of painter C, they paint the house in 8 days only. Then , Painter C alone can do this task in -

A)80 days

B)85 days

C)79 days

D)76 days

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1877 Math

A and B start at the same time with speeds of 40 km /hr and 50 km/hr respectively. If in covering the journey A takes 15 minutes longer than B, the total distance of the journey is -

A)46 km

B)48 km

C)50 km

D)52 km

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1878 Math

A person borrows TK. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6 1/4 % per annum for 2 years . Find his gain in the transaction per year.

A)TK. 112.50

B)Tk. 167.50

C)TK.150

D)TK. 225

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1879 Math

Two tarins running in opposite direction cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is :

A)1:03

B)3:02

C)3:04

D)None of these

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1880 Math

A tank has two leakages. The first leakage alone can empty the tank in 9 min and the second alone would have done it in 6 min. If water leaks out at a constant rate , how long does it take both the leakage together to empty the tank?

A)3 min

B)3.5 min

C)4 min

D)3.6 min

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1881 Math

The time taken by a man to travel 36 miles downstream is 90 min less than to go the same distance upstream . The speed of the man in still water is 10 mph. Find the speed of the stream?

A)2 mph

B)2.5 mph

C)3.5 mph

D)5 mph

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1882 Math

A boat runs at 22 km per hour along the stream and 10 km per hour against the stream .Find the ratio of the speed of the boat in still water to that of the speed of the stream .

A)2:03

B)5:03

C)7:03

D)8:03

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1883 Math

in a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant , approximately what percentage of the selling price is the profit?

A)30%

B)70%

C)100%

D)250%

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1884 Math

A)25

B)20

C)400

D)625

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1885 Math

By selling a bicycle for TK. 2,850,a shopkeeper gains 14% . If the profit is reduced to 8% ,then the selling price will be

A)Tk. 2,500

B)TK. 2,600

C)TK. 2,700

D)TK. 2,900

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1886 Math

In recent survey of the student of a public university . It is found that 65% students are good in Mathematics and 45% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and statistics of the public university?

A)20%

B)5%

C)15%

D)10%

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1887 Math

Naizel is twenty years older than Nekata . In three years Naizel will be twice as old as Neketa will be. How old is Neketa now?

A)24

B)17

C)16

D)8

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1888 Math

A wall 8m long, 6 m high and 22.5 cm thick is made up of bricks, each measuring 25 cm 6 cm The number of bricks required is

A)7,200

B)6,400

C)6,000

D)5,600

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1889 Math

The length of a rectangle is increased by 25% .By what percentage should the width be decreased so that the area of the rectangle remains unchanged?

A)30%

B)25%

C)20%

D)35%

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1890 Math

The average age of 12 children is 15 years. If another child comes the average age comes to 13. what is the age of the new child?

A)11 years

B)7 years

C)9 years

D)5 years

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1891 Math

A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. What is a length of the bridge?

A)450 meter

B)500 meter

C)350 meter

D)650 meter

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1892 Math

Find the vlue of n if 27

A)2

B)3

C)4

D)-5

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1893 Math

If the difference between the circumference and diameter of a circle is 60 cm. then the radius of the circle is

A)7 cm

B)9 cm

C)10 cm

D)14 cm

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1894 Math

On selling 30 pens at TK. 800. there is loss equal to the cost price of 5 pens. The cost price of a pen is -

A)TK. 23

B)TK. 25

C)TK. 32

D)TK. 52

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1895 Math

In the first 20 over's of a cricket game, the run rate was only 3.5 What should be the run rate in remaining 30 over's to reach the target of 289 runs?

A)7.1

B)7.2

C)7.3

D)7.4

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1896 Math

A sum of TK. 24,500 amounts to TK. 34,300 in 5 years at a simple interest rate . What is the rate of interest ?

A)5%

B)5%

C)6%

D)8%

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1897 Math

A train traveled on an average speed of 45 km per hour from Dhaka to Chittagong and returned Dhaka from chittagong on an average speed of 36 km per hour. What was the average speed of the train over the whole journey?

A)38 km. 500 m .

B)41 km. 500 m.

C)36 km. 500 m

D)40 km. 500 m

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1898 Math

The price of a loaf of bread was increased by 20% . How many that used to buy 300 loaves/

A)240

B)250

C)280

D)320

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1899 Math

Out of 80 children , 35% can play only cricket , 45% , can play only table tennis and remaining children can play both the games. In all, how many children can play cricket ?

A)28

B)36

C)44

D)55

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1900 Math

A man spends 75% of his income. His income is increased by 20% and he increased his expenses by 10% . His saving are increased by

A)50%

B)37.50%

C)25%

D)10%

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