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A man driving a car at a speed of 42 km/hr crosses a bridge in 5.4 minutes. Find the length of the bridge.
Question

A man driving a car at a speed of 42 km/hr crosses a bridge in 5.4 minutes. Find the length of the bridge.

A.

3.78 km

B.

4.38 km

C.

3.51 km

D.

3.42 km

Correct option is A

Given:

Speed of car = 42 km/hr

Time to cross bridge = 5.4 minutes

Formula Used:

Distance = Speed × Time

Solution:

Length of bridge = 42×5460 42 \times \frac{54}{60}​ = 3.78 km 

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