Question

Nutrition: One eight-ounce glass of apple juice and one eight-ounce glass of orange juice contain a total of 185 milligrams of vitamin C. Two eight-ounce glasses of apple juice and three eight-ounce glasses of orange juice contain a total of 452 milligrams of vitamin C. How much vitamin C is in an eight-ounce glass of each type of juice. Someone please help!

Answer 1

let x = amount in orange and y = amount in apple
x+y = 185
2x + 3y = 452
solve these two and youve got your answer

Answer 2

Thank you! Do I set the first one up to look like this? 2x=452-3y

Answer 3

sorry its the other way around x = apple y = orange

Answer 4

yes but i think easiest way is to multiply first equation by 2 and subtrcat them
the elimination method

Answer 5

2x + 2y = 370
2x + 3y = 452
subtract first from second and u get

y = 82
then plug this into x + y = 185 to get x

Answer 6

x=103

Answer 7

yes - thtas the apple juice

Answer 8

always look for easiest methos - substitution method would have been longer here due to the big numbers

Answer 9

That makes sense. Now for me to get the orange juice I plug x in and solve right?

Answer 10

- i've done that already when i did the subtract - see above

Answer 11

i wish my cat wouldnt jump on the keyboerd!!!!! lol

Answer 12

Oh oops I wasn't paying attention to that I'm sorry! Yeah Lol only mine is a miniature wienie dog.

Answer 13

dogs are ok but cats are my favourite
so u ok with the answer now?

Answer 14

Yes! Are you good at the back substitution method with fractional numbers? I am good at it until I get to the fractions. It is my last problem.

Answer 15

i not quite sure what you mean - but try me

Answer 16

oh really sorry byrd but i gotta go - i forgot to pick up my grandson - hes just phoned

Answer 17

Okay I am supposed to start with z and insert it using back-substitution.