A water tank holds 657 gallons but is leaking at a rate of 4 gallons per week. A second water tank holds 876 gallons but is leaking at a rate of 7 gallons per week. After how many weeks will the amount of water in the two tanks be the same?

Sometimes setting up the equation is the hardest part. Starting gallons minus (leaking gallons times number of leaking weeks) equal to the other tank, same setup.

657 - 4w = 876 - 7w
3w = 219
w = 73

Checking the math:

657 - 4(73) = 365
876 - 7(73) = 365

73 weeks

Bis the right answer

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