Multiple Choice Questions

A is twice as good a work man as B and together they finish the work in 14 days In how many days A a...........

Math and Mental Ability Time and work

A is twice as good a work man as B and together they finish the work in 14 days. In how many days A alone can finish the work?

WC = 2:1
2x + x = 1/14 => x = 1/42
2x = 1/21
A can do the work in 21 days.

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