Problema Solution
a 40% solution of fertilizer is mixed with a 70% solution of fertilizer in order to get 75 gallons of a 60% solution. how many gallons of the 40% solution and 70% solution should be mixed?
Answer provided by our tutors
Let
x = gallons of the 40% solution
y = gallons of the 70% solution
x + y = 75
0.40x + 0.70y = 0.60*75
........
........
x = 25 gal
y = 50 gal
25 gallons of the 40% solution and 50 gallons of the 70% solution should be used for the mix.