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Question 66
The ratio of length of two trains is 6 : 5 and theratio of their speed is 3 : 2 The ratio of time taken by them to cross a pole is:
Solution
The ratio of length of two trains is Â
$$\frac{L_{1}}{L_{2}}=\frac{6}{5}$$
and the ratio of their speed isÂ
$$\frac{S_{1}}{S_{2}}=\frac{3}{2}$$
We know that,
$$Time = \frac{Distance}{Speed}$$
The ratio of time taken by them to cross a pole is
$$\frac{T_{1}}{T_{2}}=\frac{\frac{6}{5}}{\frac{3}{2}}$$
$$\frac{T_{1}}{T_{2}}=\frac{4}{5}$$
Option B is correct.
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