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A train 130 m long passes a bridge in 21 seconds moving with a speed of 90 km/hr. Find the length of bridge.

A395m

B540m

C485m

D750m

Answer:

A. 395m

Read Explanation:

90 x 5/18= (130+length of bridge)/21 25=(130+x)/21 25 x 21 =130+x 525=130+x x=525-130=395


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