A) 4
B) 8
C) 12
D) 20
Correct Answer: A
Solution :
We first find out the proportionality. The more the number of people to build the wall, the less is the time taken and the less the number of people to build the wall, the more is the time taken. Hence, the relationship is inverse. \[\therefore \] \[20\times 7=35x\]where \[x\] is the number of people required. \[\therefore \] \[x=\frac{20\times 7}{35}=\frac{20}{5}=4\]people
You need to login to perform this action.
You will be redirected in
3 sec
