SSC
Sample Paper
Mock Test-6 SSC CGL Tear-II Paper-1
question_answer
A man in a train notices that he can count 21 telephone posts in one minute. If they are known to be 50 m apart, at what speed is the train travelling?
A) 55 km/h
B) 57 km/h
C) 60 km/h
D) 63 km/h
Correct Answer:
C
Solution :
Speed of train\[=\frac{20\times 50}{60}\times \frac{18}{5}=60\,\text{km/h}\]