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OpenStudy (anonymous):
A bag contains 2 steel balls and 5 brass balls. The total weight is 13 pounds. If 2 steel balls are added and 2 brass balls are removed, the weight decreases to 12 pounds. How much does each kind of ball weigh? A. steel, 4 pounds; brass, 1 poundB. steel, 1.5 pounds; brass, 2 poundsC. steel, 0.75 pounds; brass, 3 poundsD. steel, 3 pounds; brass, 4 pounds
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OpenStudy (cookie_monster):
The answer is B. steel, 1.5; brass, 2 pounds
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