A is half as efficient as B, B is twice as efficient as C. If B can do the work in 25 days, find in how many days the whole work will be completed if they work together.
1
10 days
2
12.5 days
3
15 days
4
20 days
A is half as efficient as B, B is twice as efficient as C. If B can do the work in 25 days, find in how many days the whole work will be completed if they work together.