Question
A boy goes to school at 10 km/Hr and return at a speed
of 9 km/hr. If he takes 19 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/10 + D/9 = 19 ⇒ 19D/90 = 19 ⇒ D = 90 km
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