Could you please tell me shortcuts for solving man-work problems like-2 men and 5 women can complete a piece of work in 8 days and 4 men and 3 women can complete the same work in 5 days.How log will 3 men and 4 women take to do the same job?

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Make two eqn, take man hr as x and women hour as y an equate it.

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Could you please tell me shortcuts for solving man-work problems like-2 men and 5 women can complete a piece of work in 8 days and 4 men and 3 women can complete the same work in 5 days.How log will 3 men and 4 women take to do the same job?