Question

There are 150 calories in a cup of whole milk and only 78 in a cup of skim milk. In switching to skim milk, find the percent of decrease in number of calories per cup The percent of decrease is ?

Answer 1

Answer:

48%

Explanation:

The percent of the decrease can be calculated as:

$\text{ \% decrease = }\frac{\text{ Initial value - Final value}}{Initial\text{ value}}\times100$

So, replacing the initial value with 150 calories and the final value by 78 calories, we get:

$\text{ \% decrease = }\frac{150-78}{150}\times100=48\text{ \%}$

Therefore, the percent of decrease is 48%