Posted by **Lisa** on Tuesday, September 23, 2008 at 9:15pm.

A pineapple drink contains 15% pineapple juice. How much pure pineapple juice should be added to 8 quarts of the drink to obtain a mixture containing 50% pineapple juice.

- Algebra 1 honors -
**me**, Sunday, September 23, 2012 at 9:01pm
.15*8+X=.5(8+X)

1.2+X=4+.5X

X-.5X=4-1.2

.5X=2.8

X=2.8/.5

X=5.6 QTS. OF PURE PINEAPPLE JUICE IS USED.

PROOF:

.15*8+5.6=.5(8+5.6)

1.2+5.6=.5*13.6

6.8=6.8

- Algebra 1 -
**Zach**, Wednesday, October 9, 2013 at 6:05pm
How many quarts of pure pineapple juice should Theo add to a 20% pineapple drink to create 5 quarts of 50% of pineapple juice mixture?

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