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How many minutes does Aditya take to cover a distance of 400 m, if runs at a speed of 20 kmph?
- A60 seconds
- B72 seconds
- C80 seconds
- D82 seconds
Correct answer: B
Discussion 1
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CCommunity
72 seconds
Aditya's speed = 20 kmph = 20 x 5/18 m/sec = 50/9 m/sec
Time taken to cover 400 m = (400 x 9/50) sec = 72 sec.
Aditya's speed = 20 kmph = 20 x 5/18 m/sec = 50/9 m/sec
Time taken to cover 400 m = (400 x 9/50) sec = 72 sec.