SOLUTION: One crew can seal a parking lot in 6 hours and another in 9 hours. How long will it take to seal the parking lot if the two crews work together?
Question 1121636: One crew can seal a parking lot in 6 hours and another in 9 hours. How long will it take to seal the parking lot if the two crews work together? Answer by solver91311(24713) (Show Source):
If A can do one job in time periods, and B can do the same job in time periods, then in one time period, A can do of the job, and B can do of the job. Working together, they can do of the job in one time period. So, working together, they can do the whole job in:
time periods.
John
My calculator said it, I believe it, that settles it
