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By cycling 7/9 times his usual speed, Anwar reaches his school 4 minutes late. How many minutes does Anwar take to reach school at his usual cycling speed?

By cycling 7/9 times his usual speed, Anwar reaches his school 4 minutes late. How many minutes does Anwar take to reach school at his usual cycling speed? Correct Answer 14

Ratio of speeds = 7/9

As we know that when distance is constant speed is inversely proportional to time.

Hence, time ratio = 9/7 = 9t/7t

Now, 2t = 4

⇒ t = 2

∴ 7t = 14 min.

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