OpenStudy (anonymous):

Last year, McBarkie's Burgers contained 200 grams of fat in each burger. This year, the amount of fat has been reduced to 120 grams per burger. What is the percent of decrease in the number of grams of fat per burger to the nearest percent?

5 years ago
OpenStudy (anonymous):

I know that it is not 20%

5 years ago
OpenStudy (anonymous):

percent of decrease = (starting amount - ending amount)/starting amount Last year, the burgers had 200 grams of fat, so that's the "starting amount" This year, they have 120 grams per burger, so that's the "ending amount" Calculate the fraction and express as a percentage...

5 years ago
OpenStudy (anonymous):

What is it, I am stuck on it.

5 years ago
OpenStudy (anonymous):

(start - finish) / start = (200 - 120) / 200 = 80/200 = 40/100

5 years ago
OpenStudy (anonymous):

Divide them now?

5 years ago
OpenStudy (anonymous):

yep, divide 40 by 100... unless you realize what the percentage will be already.

5 years ago
OpenStudy (anonymous):

0.4

5 years ago
OpenStudy (anonymous):

You need 0.4 as a percentage... 0.4 is the same as 4/10, and also the same as 40/100... "forty out of 100"... so it's 40%

5 years ago
OpenStudy (anonymous):

ok. Can you help me on two others

5 years ago
OpenStudy (anonymous):

one other, sorry

5 years ago
OpenStudy (anonymous):

what is it? Post it and try to solve and I can help...

5 years ago
OpenStudy (anonymous):

Change to a decimal: 14 1/2 %.

5 years ago
OpenStudy (anonymous):

that would be 0.0145 right?

5 years ago
OpenStudy (anonymous):

close... if it was 14%, that would be "14 out of 100", or 14/100, or 0.14 So 14.5% would be 14.5 out of 100, or 14.5/100, or 0.145. I think you just got an extra zero in front... 0.0145 is the same as 1 45/100 %

5 years ago
OpenStudy (anonymous):

Thank you.

5 years ago
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