Question

A $110m$ long train travels at $30km/h$. How long will it take to cross a $90m$ long platform?

• A. $\text{56 s}$
• B. $\text{36 s}$
• C. $\text{24 s}$
• D. $\text{45 s}$

Answer 1

The correct option is C $\text{24 s}$

Length of the train $=110m$,length of the platform$=90m$
the train needs to cover $=110+90=200m=0.2km$
Speed $=30km/h$
Time $\text{= Distance/Speed}$
Time $=0.2/30=1/150h=3600/150s=24s$