Asked by MArk

Diane Gray and Lucy Hoang together can prepare a crawfish boil for a lagre party in 4 hours. Lucy alone can complete the job in 2 hours less time than Diane alone. Find the time in which each person can prepare the crawfish boil alone. Round to the nearest tenth of an hour.
Answered by Steve
If Diane takes x hours,

1/x + 1/(x-2) = 1/4
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