A) 24
B) 20
C) 16
D) 18
Correct Answer: B
Solution :
Let the original number of carpenters be x, \[{{M}_{1}}{{D}_{1}}={{M}_{2}}{{D}_{2}}\] \[\Rightarrow \]\[x\times 9=(x-5)\times 12\] \[\Rightarrow \]\[9x=12x-60\] \[\Rightarrow \]\[3x=60\] \[\Rightarrow \]\[x=20\]You need to login to perform this action.
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