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CAT 2015 Quantitative Ability

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Question : 31

Total: 34

In a rowing competition, first boat rows over the course at an average speed of 4 yards/second Second boat rows over the first half of the course at 1 the rate of 3

yards /second and over the remaining half at 4

yards/second, thereby reaching the winning post 15 seconds after the first boat. Find the time taken (in minutes) by the second boat to cover the entire course

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