Question 14 • (OC27) MATH COLL LIB ARTS-1207350-S1-Maguire-D'Aquino
The 3 lb weights contribute 3x pounds, and the 10 lb weights contribute 10y pounds. Since their combined weight is 50 lb, 3x + 10y = 50. Rearranging gives 3x = 50 − 10y, which is choice B.
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