Question
A boy goes to school at 11 km/Hr and return at a speed
of 10 km/hr. If he takes 21 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/11 + D/10 = 21 ⇒ 21D/110 = 21 ⇒ D = 110 km
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