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1. A runs twice as fast as B and B runs thrice as fast as C. The distance covered by C in 72 minutes, will be covered by A in:
Then, ratio of time taken;
= : : 1 = 1 : 2 : 6
Hence, time taken by A = = 12 minutes.
Solution:
Ratio of the speed of A, B and C = 6 : 3 : 1Then, ratio of time taken;
= : : 1 = 1 : 2 : 6
Hence, time taken by A = = 12 minutes.