A? low-calorie bread has 126 calories in a 3?-slice serving.

Question

A? low-calorie bread has 126 calories in a 3?-slice serving. This is 10?% fewer than the number of calories in a serving of regular bread. How many calories are in the same size serving of regular? bread?

Answer 1

Hi Cee,

 

Let's set up a proportion.

 

126      90

---- = -----

  x      100

 

where x is the calorie count of regular bread.

We use 90/100 for our proportion.  The low calorie bread contains 10% fewer calories meaning it contains 90% of the calories of regular bread.

 

Now, cross multiply and solve for x

 

12600 = 90x

x = 140

 

Regular bread had 140 calories per serving.