Question

If $$3$$ men or $$6$$ boys can finish a work in $$20$$ days , then how long will $$4$$ men and $$12$$ boys take to finish the same work ?

A
2 days
B
4 days
C
6 days
D
8 days

Solution

The correct option is B $$6$$ days$$3$$ men $$= 6$$ boysSo, $$1$$ man $$=2$$ boys$$3$$ men or $$6$$ boys can finish a work in $$20$$ days.$$4$$ men and $$12$$ boys $$= 4 +6$$ men $$=10$$ men.$$3$$ men  can finish a work in $$20$$ days.$$10$$ men can finish the work in $$\dfrac{20\times3}{10}=6$$ days. Mathematics

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