A train covers a distance of 850 metres in 45 seconds…

A train covers a distance of 850 metres in 45 seconds. Travelling at the same speed, how many kilometres will the train cover in an hour?

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e. 68.

Given that

Time = 45 seconds = $\frac{45}{3600}$ hour

Distance = 850 m = $\frac{850}{1000}$ km

Speed = $\frac{distance}{time}$ = $\frac{850}{1000}$ / $\frac{45}{3600}$ = $\frac{85}{45}$ × 36 km/hr

Hence, the distance covered in an hour = $\frac{85}{45}$ × 36 = 68 km.

SSC CPO 2024 PYQ — Question 125