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 , he distance between his house and school is :
Answer: Option C
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Average speed = `((2 xx 3 xx 2)/(3 + 2))` km/hr = `12/5` km/hr
Distance travelled = `(12/5 xx 5)`m = 12 km.
`:.` Distance between house and school = `(12/2)` km = 6 m.
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