Question

It costs $25 to buy 5 sandwiches from a vending machine. At this rate, what is the cost for 8 sandwiches?

Answer 1

x = 40

Explanation:

We can use a ratio to solve

$25 x

------- = --------

5 8

Using cross products

25*8 = 5x

200 = 5x

Divide each side by 5

200/5 = 5x/5

40 =x