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Aquarium A holds 150 gallons more sea water than does Aquarium B, and both aquariums are currently filled to capacity. If 20 gallons are removed from each aquarium, then Aquarium A would hold four times as much sea water as Aquarium B holds. What is the combined total number of gallons of sea water that can be held in both aquariums?

Re: Aquarium A holds 150 gallons more sea water than does Aquar [#permalink]
20 Sep 2017, 05:43

The statement in formulas becomes A=B+150 and A-20=4(B-20). Substituting B from the first equation in the second one we get B=70. Substituting B back in the first equation we get A=220. Thus, the sum of the capacities is 290 and answer is A.

greprepclubot

Re: Aquarium A holds 150 gallons more sea water than does Aquar
[#permalink]
20 Sep 2017, 05:43