Eduardo’s Heaviest Catches

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On a fishing expedition, the total weight of Eduardo's two heaviest catches was 30 pounds. If twice the weight of the first of those catches was 12 pounds more than the weight of the second of them, what was the weight, in pounds, of the first of them?

Review: Eduardo's Heaviest Catches


Explanation

We're only talking about two catches here. We can call their weights A and B. Plugging numbers and algebra are about equally viable here, in my view. We are told that



And



We want A, because it's "the first of them." We can get that quickly by adding the equations:







The correct answer is (D).


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