Question

A mixture contains forty ounces of glycol and water, and it is ten percent glycol. The mixture is to be strengthened to twenty-five percent by adding glycol. How much glycol is in the original mixture?
4 oz
10 oz
40 oz

Answer 1

This is one of those "its so obvious it doesn't require any math" questions.

Answer 2

4

Answer 3

can you show me how to get to 4

Answer 4

10% of the 40 ounce mixture is glycol

So .10(40) = 4

Answer 5

@ezrider16