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Mathematics 18 Online
OpenStudy (anonymous):

The temperature dropped from 75 degrees to 50 degrees. What was the percent decrease in the temperature? 33% 50% 66%

terenzreignz (terenzreignz):

Okay... what's the actual decrease? Like the difference?

terenzreignz (terenzreignz):

By how many degrees did it decrease?

OpenStudy (anonymous):

25 degrees and also the choices were exactly 33 1/3% 50% 66 2/3%

terenzreignz (terenzreignz):

Okay, it decreased by 25 degrees, yes. Now, to get the percent decrease, divide 25 by the previous measure, 75, and multiply its quotient by 100 %

OpenStudy (binary3i):

(initial temp - final temp)*100/initial temp. this will give you

OpenStudy (binary3i):

eill give % change in temp

OpenStudy (anonymous):

thanks @binary3i @terenzreignz

OpenStudy (anonymous):

that was very simple and straightforward :) @binary3i

terenzreignz (terenzreignz):

No problem :)

OpenStudy (anonymous):

What is the sale price of a cell phone that is on sale for 15% off if the regular price is $75? $60.00 $63.75 $64.25 I would say $60?

OpenStudy (binary3i):

it is 75 - 15% of 75. can you doi it now?

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