To complete a task in 45 days, a contractor employs 45 people. Upon reviewing the work after 30 days, he notices that only half of the task is complete. In order to complete the work in 45 days, how many extra people must he employ now?
Answers
Answer:
To complete a task in 45 days, a contractor employs 45 people. Upon reviewing the work after 30 days, he notices that only half the task is completed. In order to meet the deadline of 45 days, how many extra people must he employ? EXPLANATION: In 30 days, only half the work could be done.
Answer:
The required work is to be done in 60 days. But the 30 workers completed 25% of work in 20 days. Therefore
The completed part of work = 25%
The completed work units = 30*20 =600
So 25% of work = 600 units
Total work =2400 units
So to complete the work in time = 40 days to complete the work
Required work units to complete =2400–600
=1800 units.
No of men required to complete 1800 units of work in 40 days = 1800÷40
=45
We have already 30 men. the more men required =45-30=15