A boy goes to his school from his house at a speed of 3km/hr and return at a speed of 2km/hr.

A boy goes to his school from his house at a speed of 3km/hr and return at a speed of 2km/hr. If he takes 5 hours in going and coming, the distance between his house and school is?

Quiz

Answer/Solution

6km

Steps/Work

Average speed = 2*3*2/3+2 = 12/5 km/hr
Distance traveled = 12/5 * 5 = 12km
Distance between house and school = 12/2 = 6km
Answer is B