2 men and 4 boys can complete a work in 4 days. 5 men and 6 boys can complete the same work in 3 days. The work done by 2 boys is equal to the work of how many men?
45 days
50 days
4
5
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A is twice as good a workman as B and together they complete a work in 12 days. In how many days A alone can do the work?