A) 53/9 days
B) 34/7 days
C) 85/13 days
D) 53/10 days
Correct Answer: D
Solution :
Let the work complete in x days. \[\therefore \] By given condition, \[\frac{2}{8}+\frac{x}{10}+\frac{x-2}{15}=1\] \[\therefore \] \[\frac{1}{4}+\frac{3x+2x-4}{30}=1\] \[\Rightarrow \] \[\frac{15+10x-8}{60}=1\] \[\Rightarrow \] \[10x+7=60\] \[\Rightarrow \] \[10x=53\] \[\Rightarrow \] \[x=\frac{53}{10}\text{days}\]You need to login to perform this action.
You will be redirected in
3 sec