a boy walks to his school with a constant speed of 4 kilometre per hour and reaches there in 30 minutes find the distance of the school from the house
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Answer is 2km from his house to school .
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1 hour ----> 4 km
1 min ------> 4/60 km
30min -----> (4/60)×30 = 2km
1 min ------> 4/60 km
30min -----> (4/60)×30 = 2km
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