Problema Solution
A health food store sells oatmeal for $3.60 per pound and bran flakes for $4.80 per pound. How many pounds of each should be used to get a mixture of 30 pounds that sells for $4.00 a pound?
Answer provided by our tutors
let
x = lbs of oatmeal
y = lbs of bran flakes
we need to get a mixture of 30 lbs
x + y = 30
the mixture sells for $4.00 a pound
3.60x + 4.80y = 4.00*30
3.60x + 4.80y = 120
by solving the system of equations
x + y = 30
3.60x + 4.80y = 120
we find
x = 20 lbs
y = 10 lbs
click here to see the step by step solution of the system of equations
20 lbs of oatmeal and 10 lbs of bran flakes should be used for the mixture.