Time & distance

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Walking at 3 km/hr . Pintu reaches his school 5 minutes late. If he walks at 4 km per hour he will be 5 minutes early. The distance of Pintu’s from his house is

1 1/2 km

2 km

2 1/2 km

5 km

Explanation:

Given, Speed₁ = 3 km/hr, Speed₂ = 4 km/hr
Time₁ = 5 mins late, Time₂ = 5 min early
Reqd. Distance,
= (3 x 4 /4 - 3) x (5 + 5 /60)
= 12 /1 x 10 /60 = 2 km

By: Amit Kumar

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