Nancy W. answered • 07/28/13

Math and Reading Support for Students with ADD/ADHD and Dyslexia

The problem is actually in the wording of the prompt. No where is the word "coolant" defined. In order to do this problem correctly, I am guessing you will have to define coolant as the solution of the antifreeze and water combined. Defined that way, you will be draining out a 65/35 solution.

So ... now you can rewrite your equation this way, where

.65(5), the amount of antifreeze currently in the radiator,

*c* = the amount of coolant that needs to be drained, and

.50(5), the amount of antifreeze you want in the radiator.

** .65(5) - .65 c = .50(5)**

From here, you just solve for *c, *the total amount of coolant drained from the radiator.

Geoffrey W.

That's what I got too.. though it's telling me the answer is incorrect..so I'm kind of stumped. I'm working on practice problems which you can do over and over again until they're correct..

07/27/13