SOLUTION: Nacy can mow the lawn in 5 hours. If Craig helps, they can complete the job in 2 2/9 hour. How Long would it take Craig to do the job alone ??
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Question 599149: Nacy can mow the lawn in 5 hours. If Craig helps, they can complete the job in 2 2/9 hour. How Long would it take Craig to do the job alone ?? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Nacy can mow the lawn in 5 hours. If Craig helps, they can complete the job in 2 2/9 hour.
How Long would it take Craig to do the job alone ??
:
Let c = Craig's time alone
:
Let the completed job = 1
:
Change 2 2/9 to hrs
: + = 1
multiply by 5c + = 5c
:
Multiply by 9
20c + 20(5) = 9(5c)
100 = 45c - 20c
100 = 25c
c =
c = 4 hrs, Craig's time alone
