SOLUTION: How many grams of gold alloy that costs $4 per gram must be mixed with thirty grams of a gold alloy that costs $7 per gram to make an alloy that costs $5 per gram?
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-> SOLUTION: How many grams of gold alloy that costs $4 per gram must be mixed with thirty grams of a gold alloy that costs $7 per gram to make an alloy that costs $5 per gram?
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Question 72832This question is from textbook Algebra:Structure and Method
: How many grams of gold alloy that costs $4 per gram must be mixed with thirty grams of a gold alloy that costs $7 per gram to make an alloy that costs $5 per gram? This question is from textbook Algebra:Structure and Method
You can put this solution on YOUR website! 30*7+4X=5(X+30)
210+4X=5X+150
4X-5X=150-210
-X=-60
X=60 GRAMS OF GOLD ALLOY NEEDED TO PRODUCE THE REQUIRED $5 ALLOY.
PROOF
30*7+4*60=5(60+30)
210+240=5(90)
450=450
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