Problema Solution
Solution A is 15% alcohol and solution B is 40% alcohol. How much of each should be used on order to make a 15 L of a Solution that is 35% alcohol?
Answer provided by our tutors
let
x = L of Solution A
y = L of Solution B
the mix is 15 L of 35% alchohol
x + y = 15
0.15*x + 0.40y = 0.35*15
by solving the system of equations
x + y = 15
0.15*x + 0.40y = 0.35*15
we find
x = 3 L
y = 12 L
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3 L of Solution A and 12 L of Solution B should be used.