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- Check units.
- Convert if needed.
- Apply S = D/T, D = S x T, or T = D/S.
Correct Answer: C
Correct Answer: C
Method / Topic: Time Speed Distance
The answer uses consistent units in the speed-distance-time relation.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Time Speed Distance
The train covers its own length plus platform length, a total of 400 m. Dividing by 20 seconds gives 20 m/s or 72 km/h.
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Check units.
- Convert if needed.
- Apply S = D/T, D = S x T, or T = D/S.
A train 240 m long crosses a 160 m platform in 20 seconds. What is its speed?
Explanation
Correct Answer: C
Method / Topic: Time Speed Distance
The answer uses consistent units in the speed-distance-time relation.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Time Speed Distance
The train covers its own length plus platform length, a total of 400 m. Dividing by 20 seconds gives 20 m/s or 72 km/h.
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