Question

A box of cereal states that there are 72 calories in a 3 4​-cup serving. What is the unit rate for calories per​ cup? How many calories are there in 4 cups of the​ cereal?

Answer 1

96 calories per cup

384 calories in 4 cups

Explanation:

In this scenario, we can use the rule of three to calculate the number of calories in a single cup like so...

72 calories <==========>
`(3)/(4) cup` or 0.75 cup

x calories <==========> 1 cup

(1 * 72) / 0.75 = 96 calories

Now we see that there are a total of 96 calories per cup of cereal. In order to find the total amount of calories in 4 cups of cereal, we simply need to multiply the number of calories per cup by 4, like so...

96 * 4 = 384 calories

There are a total of 384 calories in 4 cups of cereal.