A boy goes to school at 7 km/Hr and return at a speed of 6 km/hr. If he takes 13 hrs in all. Find the distance from his village to school?
Let the distance from village to school be D km According to the question, rArr; D/7 + D/6 = 13 rArr; 13D/42 = 13 rArr; D = 42 km
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