Question 386580
let x = number of miligrams of vitamin C in an eight-ounce glass of orange juice
then, 185-x = number of miligrams of vitamin C in an eight-ounce glass of apple juice

two eight-ounce glasses of orange juice and three eight-ounce glasss of apple juice contain 452 milligrams of vitamin C

2x+3(185-x)=452
2x+555-3x=452
-x=452-555
x=103 miligrams of vitamin C
185-x = 82 miligrams of vitamin C

ans: amount of vitamin C in an eight-ounce glass of orange juice is 103 miligrams
     amount of vitamin C in an eight-ounce glass of apple juice is 82 miligrams