Question

2. A snack of an apple, a brownie, and a cheese stick has 270 calories. Two brownies and an apple have 290 calories. Two apples and three cheese sticks have 420 calories. How many calories are in each item?

Answer 1

Basically, I just need help setting the problem up, and someone to check my answer at the end. I know I have to set it up as a system.

Answer 2

what answer did you get ?

Answer 3

I haven't gotten one, I'm still trying to set up the problem..

Answer 4

I have
a+b+c=270
2b+a=290
2a+3c=420

Is this set up correctly?

Answer 5

yeah you set it up correctly...
any idea on how to carry on ?

Answer 6

My last equation is not the same as yours. Is yours right?

Answer 7

But yes I think I do know how to go from here, but I may need someone to check my final answer. :)

Answer 8

Yeah yous is right i miss some when writing equation ... sorry :)

Answer 9

we ll check both our answers .. :D

Answer 10

A = 90 Calories

Answer 11

got that ?

Answer 12

B = 100 Calories and C = 80 Calories

Answer 13

Can you show me how you got that? I'm having problems :(

Answer 14

\[From \space Equation \space 3 : C = \frac{ 420 - 2A }{ 3 }\]
\[From \space Equation \space 2 : B \space = \frac{ 290 - A }{ 2 }\]
\[From \space Equation \space 1 : A \space + B \space + C \space = \space 270\]
\[A + \frac{ 290 - A }{ 2 } + \frac{ 420 -2A }{ 3 } =270 \]

Answer 15

can you complete it now ? :D

Answer 16

Yes, thank you very much!! :)

Answer 17

no problem :D Once you get the value of A
Just substitute in B = ___________ and C = ________
to have their value