July 19, 2015
GMAT mixtures come in a variety of different forms, but generally mixture problems are just weighted average problems. There are a few differences that we will go over, but think of them in the same manner. This is an example:
Solution A consists of 20% iodine and solution B is 5% iodine. If 15 ounces of solution B is mixed with solution A to make a combined solution of 10%, how many ounces of solution A are used?
For this we can just set up a weighted average problem:
We will use the ...