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
A. 5
B. 6
C. 7
D. 8
A. 5
B. 6
C. 7
D. 8
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man work in 1st case=(x-1)(x+1)[email protected] wrote: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
A. 5
B. 6
C. 7
D. 8
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