Problema Solution
A doctor's prescription calls for a daily intake of liquid containing 40mg of vitamin C and 30mg of vitamin D. Your pharmacy stocks two liquids that can be used: Liquid A contains 20% vitamin C and 30% vitamin D; liquid B contains 50% vitamin C and 25% vitamin D. How many milligrams of each liquid should be mixed to fill the prescription?
Answer provided by our tutors
let
a = ml of the liquid A
b = ml of the liquid B
0.20a + 0.50b = 40
0.30a + 0.25b = 30
by solving the system of equations we find
a = 50 ml
b = 60 ml
click here to see the step by step solution of the system of equations
50 ml of the liquid A should be mixed with 60 ml of the liquid B.