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Two bikes start the race at the same time. One bike travels at 30 m/s and the other at 90 kmph. What will be the time difference in which the bikes complete a race of 60 kms?

Two bikes start the race at the same time. One bike travels at 30 m/s and the other at 90 kmph. What will be the time difference in which the bikes complete a race of 60 kms? Correct Answer 400 seconds

Given:

Two bikes start the race at the same time

One bike travels at 30 m/s and the other at 90 kmph

Formula used:

Time = Distance/Speed

1 km/hr = 5/18 m/s

1 km = 1000 m

Calculation:

Time taken by 1st bike to complete 60 km

T = 60000/30 = 2000 seconds.

Speed of 2nd bike in m/s

90 × (5/18) = 25 m/s

Time taken by 2nd bike to complete 60 km

T = 60000/25 = 2400 seconds.

Difference between the time taken by the bikes to complete the race = 2400 - 2000 = 400 seconds.

∴ Option A is correct.

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