Problema Solution
Gertrude’s Ghoti (pronounced fish) Emporium sells salt water fish that require at 21% salt solution to survive. How much 15% salt solution should be mixed with 12 gallons of the 25% solution to create the desired 21% solution?
Answer provided by our tutors
let
x = the gallons of 15% salt solution needed for the mix
15% salt of x + 25% salt of 12 gal = 21% salt of the mix (x + 12) gal
(15/100)x + (25/100)*12 = (21/100)*(x + 12)
0.15x + 0.25*12 = 0.21(x+12)
by solving the equations we find
x = 8 gal
click here to see the step by step solution of the equations
8 gallons of the 15% salt solution should be mixed with 12 gallons of the 25% solution to create the desired 21% solution.