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OpenStudy (anonymous):
Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs. If x represents the number of 3 lb weights and y represents the number of 10 lb weights, which equation can be used to find the number of each type of weight Bob has? A)3x – 10y = 50 B)3x = 50 – 10y C)50 + 10y = 3y D)50 + 3y = 10y
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