Two trains 121m and 99m in length respectively are running in opposite directions one at a speed of ...........

Quantitative Aptitude (CPO) Time & distance

Two trains 121m and 99m in length, respectively, are running in opposite directions, one at a speed of 40 km/h and the other at

a speed of 32 km/h. In what time will they be completely clear of each other from the moment they meet?

This questions was previously asked in

SSC CPO 10th Nov 2022 Shift 3

11 sec

12 sec

13 sec

10 sec

- Two trains are running in opposite directions. One train is 121 meters long, and the other is 99 meters long.

- Their speeds are 40 km/h and 32 km/h, respectively.

- To determine how long it takes for them to completely pass each other, we first need to calculate their relative speed.

- Adding the speeds: 40 km/h + 32 km/h = 72 km/h.

- Convert 72 km/h to meters per second: \(72 \times \frac{1000}{3600} = 20\) m/s.

- Total length to cover when passing each other: 121 m + 99 m = 220 m.

- Time taken = Total distance / Relative speed = \(220 / 20 = 11\) seconds.

Option:1, 11 sec is the correct answer. .

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