সব প্রশ্নে ফিরে যান
Math
A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __
A) 4.5km
B) 6 km
সঠিক উত্তর
C) 7.2 km
D) 12 km