Question 839026
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Hi
Let {{{highlight_green(x)}}}represent How many gallons of a 25% chemical solution must be added
Mixing the 25% and 50% to get 30% solution:
*** {{{.25x + .50*60gal = .30(60gal+x)}}}  |Solve for x
      .20*60gal/.05 = x = 240gal, the gallons of 25% solution to add
 CHECKING our answer***
 60gal + 30gal = .30*300gal = 90gal
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