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A train of length 500 feet crosses a platform of length 700 feet in 10 seconds. The speed of the train is
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- 70 ft/second
- 85 ft/second
- 100 ft/second
- 120 ft/second
Correct Option: D
| Speed of train = | |
| Time taken to cross |
| = |  |  | feet/second = 120 feet/second | |
| 10 |
Second Method :
Here, x = 500 feet, y = 700 feet
t = 10 seconds, u = ?
using
| t = | |
| u |
| u = | |
| 10 |
= 120ft/second
