The first thing we have to do is identify what our variables are

Now we want to know how much a bag of Popcorn is worth and how much a candy bar is worth.
For this we have 2 equations one for what Tory sold and another for what Jake sold


From the 2 equations we solve for P, then we equalize them to be able to find the value of C

Now we know that a candy bar costs $ 2.5 we use any of the initial equations to find the value of the price of bags of popcorn

So the answer is: The value of a bag of popcorn is $6.5 and that of a candy bar is $ 2.5