Question

P and Q finished a work together in 90 days while P is twice efficient as Q then in how many days Q will finish the work alone

Answer 1

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18 days.

Step-by-step explanation:

Together they complete the work in 12 days ,

So, in one day they complete 1/12work.

Since P is twice good as Q,

So P's work done in one day= 2x ,

& Qs work done in one day= x ,

So, 2x + x = 1/12,

3x = 1/12,

X = 1/36,

So, Qs work done in oneday= 1/36,

& P's work done in one day= 1/18,

So, P alone will take 18 days to complete a piece of work ,

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Answer 2

Answer:

So, P alone will take 18 days to complete a piece of work ,