A scientist needs 32 gallons of a 12% saline solution to complete an experiment. All he has in the lab are two liquids. One has only 7% saline while the other has 23% saline. How much of each should she mix together in order to get 32 gallons of12% solution.

Question

anonymous · Answer

$$23x+7(32-x)=32\times 12$$ should do it., if $x$ represents the number of gallons of 23%  solution

hero · Answer

x  = gallons of 7%  solution
y  = gallons of 23% solution

x + y = 32
.07x + .23y = .12*32

anonymous · Answer

Thank you...

hero · Answer

Thank you... to whom?

anonymous · Answer

To both of yous...
:-)

hero · Answer

You can only use one set of formulas bro.

anonymous · Answer

Okay thanks. I needed an idea how to start. Im getting a tutor because the school I went to before didnt prepare me for this, but i really like this site. Its all new I just have to learn how to use it better.