SOLUTION: One alloy is 70% lead and 30% zinc, and another is 40% lead and 60% zinc. Find the amount of each alloy needed to make 240kg of an alloy that is 50% lead and 50% zinc. I am having
Algebra ->
Customizable Word Problem Solvers
-> Mixtures
-> SOLUTION: One alloy is 70% lead and 30% zinc, and another is 40% lead and 60% zinc. Find the amount of each alloy needed to make 240kg of an alloy that is 50% lead and 50% zinc. I am having
Log On
Question 789209: One alloy is 70% lead and 30% zinc, and another is 40% lead and 60% zinc. Find the amount of each alloy needed to make 240kg of an alloy that is 50% lead and 50% zinc. I am having trouble finding the equation to this problem. Answer by xinxin(76) (Show Source):
You can put this solution on YOUR website! Suppose the amount of the first alloy needed is X kg, the second is Y kg:
0.7X + 0.4Y = 240 * 0.5 = 120
0.3X + 0.6Y = 240 * 0.5 =120
X = 80 , Y = 160
(