11. A certain number of persons can...
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11. A certain number of persons can complete a piece of work in 55 days. If there were 6 persons more, the work could be finished in 11 days less. How many persons were originally there? (1) 17 (2) 24 (3) 30 (4) 22

11th - 12th Class
Maths
Solution
115
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11. (2) By ( M_{1} D_{1}=M_{2} D_{2} ) ( begin{array}{rr}Rightarrow & 55 x=44(x+6) Rightarrow & 55 x=44 x+264 Rightarrow & x=24end{array} ) Hence, there was 24 persons originally.
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