SOLUTION: A glass of skim milk supplies 0.3 mg of iron and 8.5 g of protein. A quarter pound of lean red meat provides 3.75 mg of iron and 23 g of protein. If a person on a special diet is t

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Question 836704: A glass of skim milk supplies 0.3 mg of iron and 8.5 g of protein. A quarter pound of lean red meat provides 3.75 mg of iron and 23 g of protein. If a person on a special diet is to have 7.17 mg of iron and 71 g of protein, how many glasses of skim milk and how many quarter-pound servings of meat would provide this? (Round your answers to 2 decimal places)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x = glasses of skim milk
y = servings of meat
1 serving meat is 0.25 pounds meat

The sum x+y has no clear useful meaning in this problem as described.

Account for the iron: 0.3%2Ax%2B3.75%2Ay=7.17, and you should examine the arrangement of the numbers very carefully to see how the left and right members are milligrams of iron.

Account for the protein: 8.5x%2B23y=71

Those two equations are your linear system. Solve for x and y.
Tell if you further trouble with this.