Question
A student reaches his school 15 min before time by going there from his house at a speed of 5km/h and reaches late by 9 min by going with a speed of 3 km/h. According distance between his house and school is
Answer: Option C
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Let the distance between the house and the school be d.
Then according to the question
d/3 “ d/5 = 24/60
=> 2d/15 = 24/60
=> D= 12/4 =3
Hence the distance between the house and the school is 3km
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