Time and Distance | Arithmetic aptitude | Discussion Page

Which of the following trains is the fastest ?

A) 25 m/sec

B) 1500 m/min

C) 90 km/hr

D) All the three speeds are equal

Option D

25 m/sec $=\left(25\times \frac{18}{5}\right)$ km/hr = 90 km/hr

And, 25 m/sec $=(25\times 60)$ m/min = 1500 m/min. So, all the three speeds are equal.

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