A) 2
B) 1.5
C) 1.6
D) 2.6
Correct Answer: A
Solution :
Speed of the train = 120 km/h \[=120\times \frac{5}{18}m/s=\frac{100}{3}m/s\] Suppose the length of the platform = x m Then, \[\frac{x+320}{\frac{100}{3}}=24\] \[\Rightarrow \] \[3(x+320)=100\times 24\] \[\Rightarrow \] \[x+320=800\] \[\Rightarrow \]\[x=800-320=480\] Hence, speed of a man \[=\frac{480}{4\times 60}\,\,m\text{/}s=2\,\,m\text{/}s\]You need to login to perform this action.
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