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?

  1. 👍 0
  2. 👎 0
  3. 👁 210
asked by Jake
  1. .25(x)+.50(1000-x)=.45(1000)

    where x is the number of grams of 25% copper

    and 1000-x is the rest of the 1000 grams i.e. the number of grams of 50%

    1. 👍 0
    2. 👎 0
    posted by TutorCat

Respond to this Question

First Name

Your Response

Similar Questions

  1. 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

    asked by Danie; on September 19, 2010
  2. 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?

    asked by Anon on February 27, 2013
  3. 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?

    asked by k.boy on October 27, 2010
  4. 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

    asked by Melody on October 19, 2007
  5. Geometry

    An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.

    asked by Ivan on January 18, 2011
  6. math

    An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.

    asked by justin on April 6, 2014
  7. Math

    There are two alloys consisting of zinc, copper and tin. The first alloy contains 25% zinc and the second alloy contains 50% copper. The percentage of tin in the first alloy is twice that in the second alloy. 200 kg of the first

    asked by Tamasa on June 19, 2016
  8. 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?

    asked by Reagan Brown on October 29, 2015
  9. 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?

    asked by Anonymous on October 29, 2015
  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

    asked by shea on December 4, 2016

More Similar Questions