:) Question is: How many gallons of a solution of glycerine and water containing 55% glycerine should be added to 15 gallons of a 20% solution to give a 40% solution??

please answer me!!! :confused:

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- Jun 19th 2006, 07:13 PMBrookeHelp me Fast for a College Class!!!
:) Question is: How many gallons of a solution of glycerine and water containing 55% glycerine should be added to 15 gallons of a 20% solution to give a 40% solution??

please answer me!!! :confused: - Jun 19th 2006, 07:21 PMThePerfectHackerQuote:

Originally Posted by**Brooke**

**Solution 1**has 55% of x gallons is glycerine which is gallons.

**Solution 2**has 20% of 15 gallons is glycerine which is gallons.

Thus when you combine them,

you have is amount of glycerine.

and, in total you have,

And you want 40% thus,

Thus,

Thus,

Thus,

Thus,