SOLUTION: one custodian cleans a suite of offices in 4 hours. when a second custodian is asked to help the regular custodian it takes 2 hours. how long does it take the second worker to the

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Question 352016: one custodian cleans a suite of offices in 4 hours. when a second custodian is asked to help the regular custodian it takes 2 hours. how long does it take the second worker to the job alone?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
1/4+1/X+1/2
1/X=1/2-1/4
1/X=2/4+1/4
1/X=1/4 CROSS MULTIPLY.
X=4 HOURS ANS. FOR THE CLEANING TIME FOR THE SECOND WORKER WORKING ALONE..