Question

If the ratio of work done by (x-1) men in (x+1)days to the work done by (x+2)men in (x-1)days is 9:10, then x is equal to

Answer 1

Answer:

Step-by-step explanation:

Let the work by (x-1) men in (x+1) days = 9z

Then, work done by 1 man in 1 days = [9z/(x-1) * 1/(x+1)]

Let the work done by (x+2) men in (x-1) days = 10z

Therefore Work done by 1 man in 1 days = 10z/(x+2)(x-1)

Therefore

9z/(x-1)(x+1) = 10z/(x+2)(x-1)

Solve

x=8

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Answer 2

Please see the attachment