Lessons

General Aptitude
19.1 Time and Distance - General Questions

8 / 15

Q.

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is:

View Answer

Correct choice: D

Explanation:

Let the speed of two trains be 7x and 8x km/hr.

Then, 8x = 400 = 100
4

⇒x = 100 = 12.5
8

∴ Speed of first train = (7 x 12.5) km/hr = 87.5 km/hr.

8 / 15