Homework Help: Math (Algebra)

Posted by Lynn on Sunday, July 4, 2010 at 2:30pm.

Again please NO answers! Only on how to solve.

One canned juice drink is 20% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 15L that is 14% orange juice?

Math (Algebra) - Damon, Sunday, July 4, 2010 at 5:21pm
.2 x + .05 y = .14 (x+y)
and
x+y = 15
Math (Algebra) - Henry, Monday, July 5, 2010 at 9:55pm
O.J.=(0.14)(15)=2.1 lit ers.

1. 0.2X+0.05Y=2.1
2. X + Y = 15
To solve by elimination,multiply
both sides of equation 1 by(-)5:

-X-o.25Y=-10.5
X + Y = 15

Y = 6 liters @ 5% O.J.
X = 9 liters @ 20 % O.J.

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