SOLUTION: All members of a crew work at the same pace. If only 4 members of the crew are working, they complete the job in 18 days. How many hours will it take all 9 members of the crew to c

Question 964695: All members of a crew work at the same pace. If only 4 members of the crew are working, they complete the job in 18 days. How many hours will it take all 9 members of the crew to complete the same job?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The rate of working for members is:
[ 1 job ] / ( 18 days ]
---------------------------
member will take times as long
to finish the job, so the rate for member is:
[ 1 job ] / [ 72 days ]
----------------------
The rate for members would be times
as fast as the rate for member, so the rate is:
, or
[ 1 job ] / [ 8 hrs ]
All 9 members of the crew take 8 hrs
to complete the same job

RELATED QUESTIONS
All members of a crew work at the same pace. If only 4 of them are working, they complete (answered by josgarithmetic)

All members of a crew work at the same pace. If only 4 members of the crew are working,... (answered by macston)

To complete a job a crew of 8 people needs 18 days. How long will the same job be... (answered by josgarithmetic)

A 3-men crew can do a certain job in 3 weeks and 2 days, if we are to hire 4 men crew... (answered by josmiceli)

If a crew of 9 workers can paint a house in 14 days. How long will it take a crew of 5 to (answered by ankor@dixie-net.com)

an electrical contractor is planning to complete a lighting job by useing two separate... (answered by richwmiller)

Two crews can complete a job in 45 days when working together. On their own, one crew... (answered by ankor@dixie-net.com)

A group of workers decided to finish a work in 10 days but 5 of them could not join the... (answered by josgarithmetic,stanbon)

One crew can detassel a field of corn in 6 days. Another crew can do the same job in 4... (answered by ankor@dixie-net.com)