Posted by Anonymous on Tuesday, November 9, 2010 at 11:31am.
An alloy is made by using copper and zinc in the ratio of 17:3 how much zinc is used to make 4kg of the alloy?

maths  Henry, Wednesday, November 10, 2010 at 6:10pm
zinc = 3x kg,
copper = 17x kg,
3x + 17x = 4.0 kg,
20x = 4,
x = 4 / 20 = 0.20,
3x = 3 * 0.20 = 0.6 kg = zinc required.

maths  saleh, Thursday, January 3, 2013 at 4:26pm
16

Maths  Ayush, Saturday, April 2, 2016 at 4:39am
let weight of zinc and copper=3x and 17x respectively.
Then,
17x + 3x=4000grams
20x=4000grams
x=(4000/20)grams
x=200grams
therefore, zinc required=(200*3)grams=600 grams=0.6 kg.
Answer This Question
Related Questions
 math  The ratio of zinc and copper in an alloy is seven ratio nine if weight ...
 Math  An alloy is made up of 25% copper, 30% iron an rest being zinc. Find the ...
 Algebra  One alloy of brass is 70% copper and 30% zinc. Another alloy of brass ...
 Math  There are two alloys consisting of zinc, copper and tin. The first alloy ...
 math  The ratio of zinc and copper in an alloy is 7:9. if the weight of copper ...
 Algebra  solve linear equationan alloy of metal is 25% copper. Another alloy ...
 8th grade  An alloy of metals is 25% copper .Another alloy is 50% copper. How ...
 math  An alloy of metals is 25% copper. Another alloy is 50% copper. How much ...
 math  an alloy is formed by mixing 4.5g copper and 2.8g zinc.how much alloy of ...
 math  an alloy of metals is 20% copper. another alloy is 50% copper.how much of...
More Related Questions