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Joint Variation

Three men A, ...

Question

Three men A, B, and C working together, complete a work in 10, 15, and 30 days respectively. If A and B left the work 4 days and 3 days respectively before the completion of the work, how many days in total did it take to finish the work?

A

6

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B

8

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C

9

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D

10

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Solution

The correct option is B 8

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