please help!!!

I first abbreviated chocolate bars for cb and gummy candies for gc. I started with Cb+gc=275. I used guess and check for this one. Let's start off with 100 Chocolate bars. This amounts to 125+131.25 = 256.25. This shows that you need more chocolate bars. Each gummy candy you switch into a chocolate bar will add 0.5 dollars to your total bill. You subtracted 272.25 from 256.25, and you get 16. 16 is 32 halves of a dollar. This means you need 32 more Chocolate bars. This amounts to a total of 100+32 = 132 chocolate bars and 143 gummy candies.

Another way of approaching the problem is by setting up equations.

Let $b = \text{ # of chocolate bars}$, and $c = \text{# of gummy candy}$

Because the total number of bars and candies sold was $275$,

We can set up the equation $b + c = 275$

Next, we have the individual price for the chocolate bars, the individual price for the gummies, and the total price. We can set up another equation using these three.

$$1.25 ( \text{# of chocolate bars} ) + $0.75 ( \text{# of gummy bears} ) = \text{total price}$,

Therefore,

$1.25b + 0.75c = 272.25$

Now we have our two equations,

$b + c = 275$

$1.25b + 0.75c = 272.25$

You can either use substitution or elimination to solve for the two equations,

Which leaves us with our final answers:

$\boxed{b = 132 , c = 143}$