Algebra

posted by .

How much 20% and 40% copper alloy should be mixed to yield 500 kilograms of 25% copper alloy

  • Algebra -

    box 1
    x kg
    .2x copper
    .8 x whatever

    box 2
    y kg
    .4 y copper
    .6 y whatever

    box 3
    x+y kg = 500
    .25*500 = 125 kg copper
    375 kg whatever

    so
    125 = .2 x + .4 y
    500 = x + y

    take it from there

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    solve linear equation-an alloy of metal is 25% copper. Another alloy is 50% copper. how much of each alloy should be used to make 1000 grams of an alloy that is 45% copper
  2. 8th grade

    An alloy of metals is 25% copper .Another alloy is 50% copper. How much of each alloy should be used to make 1000grams of an alloy that is 45% copper?
  3. math

    An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each alloy should be used to make 1000 grams of an alloy that is 45% copper
  4. math

    an alloy of metals is 20% copper. another alloy is 50% copper.how much of each should be used to make 1000 gram of an alloy that is 45% copper?
  5. Algebra/Math

    Can you show work por favor? :) A metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should be combined to create 80 kg of a 53% copper alloy?
  6. Math

    an alloy of metals is 20% copper. another alloy is 70% copper.how much of each should be used to make 80 gram of an alloy that is 50% copper?
  7. Algebra

    an alloy of metals is 20% copper. another alloy is 70% copper.how much of each should be used to make 80 gram of an alloy that is 50% copper?
  8. math

    A metal worker has a metal alloy that 30% copper and another one is 55% copper. how many kilograms of each alloy should the metalworker combine to make 50kg of a 50% copper alloy?
  9. math

    A metal worker has a metal alloy that 15% copper and another one is 70% copper. how many kilograms of each alloy should the metalworker combine to make 120kg of a 48% copper alloy?
  10. math

    a metalworker has a metal alloy thay is 25% copper and another alloy that is 60% copper. how many kilograms of each alloy should the metalworker combine to create 90kg of a 53% coppet alloy

More Similar Questions