Elena went to a store where you can scoop your own popcorn and buy as much as you want. She bought 10 ounces of spicy popcorn for $2.50 How many oz. of popcorn can you buy per dollar?

4 ounces

Step-by-step explanation:

She bought 10 ounces of spicy popcorn for $2.50

How many oz. of popcorn can you buy per dollar?

Let

oz. of popcorn can you buy per dollar = x

10 ounces : $2.50 = x ounces : $1

10 / 2.50 = x / 1

Cross product

10 * 1 = 2.50 * x

10 = 2.50x

Divide both sides by 2.50

x = 10 / 2.50

= 4

x = 4 ounces

You can buy 4 ounces of of popcorn for $1

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.