Problema Solution
Gabe, a nuclear physicist, needs 30 liters of a 60% acid solution. He currently has a 40% solution and a 70% solution. How many liters of each does he need to make the needed 30 liters of 60% acid solution?
Answer provided by our tutors
let
x = the liters of 40% acid solution
y = the liters of 70% acid solution
the mix of x and y is 30 liters of a 60% acid solution
x + y = 30
0.40x + 0.70y = 0.60*30
by solving the above system of equations we find
x = 10 L
y = 20 L
click here to see the step by step solution of the system of equations
Gabe needs 10 liters of 40% acid solution and 20 liters of 70% acid solution.