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15% less calories per serving











































   • How do you solve the following problem?

           Jolly bread has 140 calories per serving.

           This is 15% less than the calories in a serving of Happy bread.

   • How many calories are in a serving of Happy bread?

Comments for 15% less calories per serving

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Oct 12, 2012
Percent Calculations
by: Staff


Answer:


How to CALCULATE a PERCENT

How to calculate a percent:

Calculating a percent means a fraction (which represents the proportion) must be converted to a decimal, and then the decimal must be multiplied by 100.

To complete this process: use a calculator or be prepared to do some division long hand.

Converting the following fraction (proportion) to a percent: 63/75

Proportion = 63/75

= (63/75) * 100

= (.84) * 100

= 84 %


How to USE the known PERCENT to solve for the calories in Happy Bread
       

Jolly bread has 140 calories per serving.

J = 140

This is 15% less than the calories in a serving of Happy bread.

J = H - 15% of H

The word “of” means multiply

J = H - 15% * H

Convert 15% to a decimal by dividing 15 by 100

15% / 100 = .15

Substitute .15 for 15%

J = H - 15% * H

J = H - 0.15 * H

Replace the J with 140 calories

140 = H - 0.15 * H

Solve for H

140 = H - 0.15 * H

140 = H - 0.15H

140 = 0.85H

0.85H = 140

Divide each side of the equation by 0.85

0.85H / 0.85 = 140 / 0.85

H * (0.85 / 0.85) = 140 / 0.85

H * (1) = 140 / 0.85

H = 140 / 0.85

H = 164.706 calories


Final Answer:

                 Happy Bread has 165 calories per serving




Thanks for writing.

Staff
www.solving-math-problems.com


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