Mathematics · Speed, Time and Distance
Select the option that is true regarding the following labelled Assertion (A) and Reason (R). Assertion (A): A train running at a speed of 72 km/h crosses a 200-metre-long platform in 25 seconds. Reason (R): Speed of the train is 20 m/s, and time taken to cross the platform is equal to the time taken to travel (Length of Train + Length of Platform) at that speed.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both A and R are true but R is not the correct explanation of A.
- 2A is true and R is false.
- 3A is false and R is true.
- 4Both A and R are true and R is the correct explanation of A.✓
Correct answer
Both A and R are true and R is the correct explanation of A.
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