Problema Solution
kelli mixes an allow containing 14% silver with an alloy containing 25% silver to make 100 pounds of an alloy with 18% silver. how many pounds of each kind of alloy did she use? round your answer to the nearest tenth.
Answer provided by our tutors
let
x = lbs of the 14% silver alloy
y = lbs of the 25% silver alloy
x and y is mixed to make 100 lbs of an alloy with 18% silver
x + y = 100
0.14x + 0.25y = 0.18*100
by solving the above system of equations we find
x = 63.6 lbs
y = 36.4 lbs
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