Problema Solution
An 112 ounce mixture is created by combining two ethylene solutions. One solution is 10% ethylene and the other is 2% ethylene. If the final mixture is comprised of a 7.9% ethylene solution, then how much of the 10% solution was used?
Answer provided by our tutors
Let
x = ounces of 10% ethylene
y = ounces of 2% ethylene
x + y = 112
0.10x + 0.02y = 0.079*112
........
click here to see the system of equations solved for x and y
........
x = 82.6 oz
y = 29.4 oz
8.26 ounces of the 10% solution is needed.