Multiple Choice Questions

A does half as much works as B in three fourths of the time If together they take 18 days to complet...........

Elelmentary Mathematics (UPPCS) Time and work

A does half as much works as B in three-fourths of the time. If together they take 18 days to complete a work, how much time shall B take to do it?

30 days

35 days

40 days

none of these

Let b cab do 6 unit in 1 day

So a will do 3 unit in 3/4 th day . So 4 unit in full day.

So ratio of efficiency is 4 :6 or 2:3

So b will take 18 / (3/5) = 30 day

Hence, option 1 is the correct answer.

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