The ratio between the work done by (x - 1) men in (x + 1) days and the – McqOptions

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1.	The ratio between the work done by (x - 1) men in (x + 1) days and the work done by (x + 2) men in (x - 1) days is 9 ∶ 10. What will be the value of x?
A.	8
B.	9
C.	10
D.	12
Answer» B. 9

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