Sherry S. answered • 03/13/19
Tutor
4.9
(89)
Because no one should have to say, "I was never any good at math."
The problem can be completed as a proportion. (Not sure how to put the equal sign between my 2 fractions below. It would be 2/5 = x/7)
2 parts concentrate x gallons concentrate
5 parts water 7 gallons water
Cross multiply & solve
14 = 5x
14/5 = x
2.8 = x
