SOLUTION: How many Kg of a 35% copper alloy must be added to 62 Kg of a 75% copper alloy to give you a 50% copper alloy?

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Question 369618: How many Kg of a 35% copper alloy must be added to 62 Kg of a 75% copper alloy to give you a 50% copper alloy?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let A be the amount of 35% copper alloy.
35A%2B75%2862%29=50%28A%2B62%29
35A%2B4650=50A%2B+3100
15A=1550
highlight%28A=310%2F3%29kg