A box of cereal states that there are 90 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: unit rate for calories per cup = 120

calories in 4 cups of cereal = 480

Solution:

Total number of calories in a box of cereal = x calories

Calories in 3/4 cup serving = 90

How many calories in 4 cups = c

How many calories per cup = x

Unitary method

Cups Calories

3/4 90

1 x

Corss multiply

3/4 * x = 90 * 1

x = 90 * 4/3

x = 120 calories

Now for 4 cups,

Cups calories

1 120

4 c

(Cross multiply)

1 * c = 120 * 4

c = 480 calories answer