SOLUTION: Working together, Carla and Elise can cut and split a cord of wood in 4 hours. Working alone, Carla takes 6 hours more than Elise. How long would it take ELise to do this job alone

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Question 136099: Working together, Carla and Elise can cut and split a cord of wood in 4 hours. Working alone, Carla takes 6 hours more than Elise. How long would it take ELise to do this job alone?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
6X/(6+X)=4
6X=4(6+X)
6X=24+4X
6X-4X=24
2X=24
X=24/2
X=12 ANSWER FOR THE TIME FOR ELSIE WORKING ALONG.
PROOF:
6*12/(6+12)=4
72/18=4
4=4