a is twice as good a workman b and together they finish, Time & Work, General Mathematics

Question:A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work ?

Answer (A's 1 day's work): (B's 1 day's work) = 2 : 1.

(A + B)'s 1 day's work `= 1/18`

Divide` 1/18` in the ratio 2 : 1.

:. A's 1 day's work` = (1/18 xx 2/3) = 1/27`

Hence, A alone can finish the work in 27 days.

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A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work ?

Question:A is twice as good a workman as B and together they finish a piece of work in 18 days. In how many days will A alone finish the work ?

Answer (A's 1 day's work): (B's 1 day's work) = 2 : 1. (A + B)'s 1 day's work `= 1/18` Divide` 1/18` in the ratio 2 : 1. :. A's 1 day's work` = (1/18 xx 2/3) = 1/27` Hence, A alone can finish the work in 27 days.