How much a crab weigh?
If a crab and a half weigh a pound and a half, but the half crab weighs half as much again as the whole crab, what do half the whole crab and the whole of the half crab weigh?
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2.1 pounds. The whole crab must weigh 0.6 pounds, and the half crab 0.9 pounds, totaling 1 1/2 pounds. If the former were halved and the latter doubled, the weights would then be 0.8 and 1.8 pounds, totaling 2.1 pounds.
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