Question

PLEASE HELP!

Charlie ate ¾ cup dry food for breakfast and another ½ cup for dinner. If the food
has a caloric density of 360kcal/cup, how many kcal did Charlie eat in total? Please show work!

Answer 1

Answer: 450 kcal

Explanation:

So you know the food is 360 kcal per 1 cup

by setting up a proportion, you can relate the number of kcal to cups.

`(360 kcal)/(1 cup) = (?kcal)/((3/4 +1/2)cup) \\\\`

we can simplify the fraction to this:

`(360 kcal)/(1 cup) = (?kcal)/((5/4)cup) \\\\`

by cross multiplying you can solve the proportion

(360) * (5/4) = (?) * (1)

simplifying gets this:

450 = ?

so he ate 450 kcal total