Question 257237
How many kilograms of zinc that is 18% pure should be mixed wth 16 kilograms of alloy that is 24% pure to make an alloy that is 22% pure zinc?
.
Let x = kilograms of zinc
then
.18x + .24(16) = .22(x+16)
.18x + 3.84 = .22x+3.52
0.32 = .04x
8 kilograms = x