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A man riding on a bicycle at a speed of 15 km/h crosses a bridge in 5 min. Find the length of the bridge ?


1. 1.25 km
2. 2 km
3. 2\(1\over 2\) km
4. 1 km

1 Answer

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Best answer
Correct Answer - Option 1 : 1.25 km

Given

Speed = 15 km/hr

Time = 5 minutes

Concept used

Time and distance

Calculation

Distance = Time × Speed

Time needed 

⇒ 5 min = (5/60) hr

Distance = 15 × (5/60)

Distance = 1.25 km

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