SOLUTION: A certain alloy is composed of two metals, A and B. How many tons of metal A should be added to 24 tons of metal B in order to have an alloy 76% metal A?

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Question 1162591: A certain alloy is composed of two metals, A and B. How many tons of metal A should be added to 24 tons of metal B in order to have an alloy 76% metal A?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52895) About Me  (Show Source):
You can put this solution on YOUR website!
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This problem is for quick mental guessing, and the answer is 76 tons of the metal A.



Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Total tons of alloy, A+24
Tons of alloy A, A

A%2F%28A%2B24%29=0.76
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A=0.76A%2B0.76%2A24
A-0.76A=0.76%2A24
0.24A=0.76%2A24
A=0.76%2A24%2F0.24
highlight%28A=76%29