A) 12 days
B) 15 days
C) 20 days
D) 10 days
Correct Answer: B
Solution :
Part of work done by A, B and C together in 3 days\[=\frac{1}{20}\times 3+\frac{1}{30\times 1}+\frac{1}{60}\times 1=\frac{1}{5}\] \[{{A}_{1}}:{{A}_{2}}=2:5.\]Total time for the work \[{{I}_{1}}=\frac{PTR}{100}\] days.
You need to login to perform this action.
You will be redirected in
3 sec
