Work done by (x+4) mean in (x+5) days is equal to the work done by (x-5) men in (x+20) days. What is the value of x?

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

The work done by (x - 2) men in (4x + 1) days and the work done by (4x + 1) men in (2x - 3) days are in the ratio 3 : 8. Find the value of x.

The work done by (x - 3) men in (2x + 1) days and the work done by (2x + 1) men in (x + 4) days are in the ratio 3 : 10 . Find the value of x.

The work done by 4 men in 12 days is equal to the work done by 6 women in 10 days and is also equal to the work done by 8 children in 9 days. A man, a woman and a child working together take 10 days to complete a particular job. In how many days will the same job be completed by 2 women and 5 children working together?

If the ratio of the work done by (x + 2) workers in (x-3) days to the work done by (x + 4) workers in (x-2) days is 3:4, then what is the value of x?

10 men and 8 women together can complete a work in 5 days. Work done by one woman in a day is equal to half the work done by a man in 1 day. How many days will it take for 4 men and 6 women to complete that work?

Work done by A in 3 days is equal to the work done by B in 4 days. What is the ratio of time taken by A and B to complete a work?