Problema Solution
A mixture of 16% disinfectant solution is to be made from 20% and 14% disinfectant solutions. How much of each solution should be used if 15 gallons of the 16% solution are needed?
Answer provided by our tutors
let
x = gal of the 20% solution needed
y = gal of the 14% solution needed
we need to make 15 gallons of a 16% solution
x + y = 15
0.20*x + 0.14*y = 0.16*15
by solving the system of equations we find
x = 5 gal
y = 10 gal
click here to see the step by step solution of the system of equations