SOLUTION: One custodian cleans a suite of offices in 5 hours. When a second worker is asked to join the regular custodian, the job takes only 2 1/2 hours. How long does it take the second w

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: One custodian cleans a suite of offices in 5 hours. When a second worker is asked to join the regular custodian, the job takes only 2 1/2 hours. How long does it take the second w      Log On

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Question 292029: One custodian cleans a suite of offices in 5 hours. When a second worker is asked to join the regular custodian, the job takes only 2 1/2 hours. How long does it take the second worker to do the same job alone?
thank you
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
2.5/5+2.5/x=1
1/2+2.5/x=1
2.5/x=1/2
x=5
the second works the same as the first 5 hours