Question

A metalworker has a metal alloy that is 30% copper and another alloy that is 55% copper. How many kilograms of each alloy should the metalworker combine to create 80kg of a 45​% copper​ alloy?

Answer 1

Answer:
32 kg of 30% copper
48 kg of 55% copper
Step-by-step explanation:
Let x represent the mass of 55% copper alloy that is to be used in the mix. Then 80-x is the mass of 30% copper alloy to be used. The total amount of copper in the mix is then ...

... 0.55x + 0.30(80-x) = 0.45·80

... 0.25x = 12 . . . . . . simplify, subtract 24

... x = 48 . . . . . . . . . divide by the coefficient of x

... 80-x = 32 . . . . . . the mass of 30% copper alloy required

The metalworker should combine 32 kg of 30% copper alloy with 48 kg of 55% copper alloy to make 80 kg of 45% copper alloy.

Answer 2

thank you person who stole my name! i could not for the life of me figure this out my brain was hurting bad

Answer 3

I didnt steal your name, i stole it then altered it.....😏

Answer 4

I borrowed it......