A train takes 1 minute to cross a stationary pole. How much time (in seconds) will it take to cross a bridge whose length is twice that ofthe train?
As we know thatÂ
Speed = $$\frac{distance}{time}$$
GivenÂ
Let train length = D
Speed = $$\frac{D}{60}$$
NowÂ
Given thatÂ
Bridge length = 2D
Time = $$\frac{bridge length+ train }{speed}$$
Time = $$\frac{2D+ D }{\frac{D}{60}}$$
Time = 180
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