Question
A boy goes to school at 5 km/Hr and return at a speed of
4 km/hr. If he takes 9 hrs in all. Find the distance from his village to school?Solution
Let the distance from village to school be D km According to the question, ⇒ D/5 + D/4 = 9 ⇒ 9D/20 = 9 ⇒ D = 20 km
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