## ebydaqueen17 3 years ago a nutritionist finds that a large order of mc donalds fries has more fat than a quarter pounder. the fries have 4 more grams than 3 times the amount of fat in the quarter pounder. the difference between the two is 46 grams. find the fat content of the hamburger and of the fries.

1. ethayer

Fries + 4g = 3*Burger Fries - Burger = 46g (not Burger - Fries since it says Fries is larger) solve one system for either Burger or Fries and plug it into the other system

2. ebydaqueen17

can u please work it out for me....this is what i got so far|dw:1349412941402:dw|

3. ebydaqueen17

thts whut i put together from whut yu told me.....

4. ethayer

that's right! now solve one equation for y or x. I would suggest you re-write the second equation as y = 46 + x (just take x to the other side). Now put (46 + x) into y in the first equation.

5. ethayer

everything will be in terms of y, so you can solve for y. Then plug y back into 2nd equation and you will find x!

6. ebydaqueen17

thnks