Posted by Janice on Tuesday, February 7, 2012 at 11:17pm.
A juice concentrate containing 65% solids is added to a singlestrength juice solution(containing 15% solid), in order to generate a final product which contains 45% solids.
Calculate the amounts required for the concentrate and for the single strength solution to produce 100kg of product.

Math  Anonymous, Wednesday, February 8, 2012 at 11:09am
work with the amount of solids in each solution. The total amount must be the same at the end:
If x kg of 65% solution is used,
.65x + .15(100x) = .45(100)
.65x + 15  .15x = 45
.5x = 30
x = 60
So, 60kg of 65% + 40kg of 15% = 100kg of 45%