সব প্রশ্নে ফিরে যান
Math
A person travels a certain distance at 3 km/hr and reaches 15 mi late. If he travels at 4 km/hr reaches 15 min late. If he travels at 4 km/hr reaches 15 min earlier. The distance he has to travel is -
A) 8.5 km
B) 6 km
সঠিক উত্তর
C) 7.2 km
D) 12 km