A) 12
B) 10
C) 9.6
D) 9
Correct Answer: D
Solution :
Let the work be finished in x days. According to the question, A worked for x days while B worked for \[(x-3)\]days \[\therefore \] \[\frac{x}{18}+\frac{x-3}{12}=1\] \[\Rightarrow \] \[\frac{2x+3x-9}{36}=1\] \[\Rightarrow \] \[5x-9=36\] \[\Rightarrow \] \[5x=45\] \[\therefore \] \[x=\frac{45}{5}=9\] Hence, the work was completed in 9 days.You need to login to perform this action.
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