Question
A boy goes to his school from his house at a speed of 3 km / hr and returns at a speed of 2 km / hr. If he takes 5 hours in going and coming, the distance between his house and school is :___________?
Answer: Option C
AVERAGE SPEED = ( 2 X 3 X 2/3 + 2 ) KM/ HR = 12/5 KM/ HR. DISTANCE TRAVELLED = ( 12/5 X 5 )KM = 12 KM. SO DISTANCE BETWEEN HOUSE AND SCHOOL = ( 12/2 )KM = 6 KM.
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AVERAGE SPEED = ( 2 X 3 X 2/3 + 2 ) KM/ HR = 12/5 KM/ HR. DISTANCE TRAVELLED = ( 12/5 X 5 )KM = 12 KM. SO DISTANCE BETWEEN HOUSE AND SCHOOL = ( 12/2 )KM = 6 KM.
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