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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
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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?

User Ihor Bykov
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2 Answers

2 votes

Answer:

Explanation:

The answer above this answer is correct

User Ben Harvey
by
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3 votes
Solve using system of equations.
s=number of steel balls
b=number of brass balls
2s+5b=13
4s+3b=12
Multiply first equation by -2 to get -4s-10b=-26
add the two equations
-7b=-14
Simplify
b=2 now substitute 2 for b in any equation to get s=1.5
User Xfeep
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