If 5 women or 8 girls can do a work in 84 days. In how many days can 10 women and 5 girls can do the same work ?
Given that 5 women is equal to 8 girls to complete a work so, 10 women=16 girls. Therefore 10women +5girls=16girls+5girls=21girls. 8 girls can do a work in 84 days then 21 girls= (8 $\times$ 84/21)=32days. Therefore 10 women and 5 girls can a work in 32days
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