4 men and 6 women can complete a work in 8 days while 3 men and 7 women can complete it in 10 days . In how many will 10 women complete it?

Two -fifth of one -fourth of three seventh of a number is 15. what is the half of the number ?

Length of a train is 170 meters and speed of train is 63 km / hr . This train can pass a bridge in 30 seconds...

A water tank has two taps (Tap1 -Tap2) . Tap -1 can fill a tank in 8 hours and Tap- 2 can empty the tank in 16...

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

A company produces five types of shirts -- A,B,C,D and E-using cloth of three qualities -- high, medium and lo...

Rahim borrowed Tk. 800 at 6% per annum and karim borrowed tk. 600 at 10% per annum .After how much time, will...