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Mathematics 13 Online
OpenStudy (johnnewman):

The temperature of an oven went from 320° to 280°. What was the percent decrease in temperature? A. 1.25% B. 12.5% C. 1.43% D. 14.3%

OpenStudy (xhawaiiangirlx):

I can help ya out

OpenStudy (xhawaiiangirlx):

Okay so first we have 320° to 280°

OpenStudy (xhawaiiangirlx):

Now, what we have to do next in order to turn it to a percent is turn it into a fraction

OpenStudy (johnnewman):

idk

OpenStudy (xhawaiiangirlx):

Okay we are gonna subtract 320 (not 380) and 280 how much is that?

OpenStudy (xhawaiiangirlx):

@JohnNewman

OpenStudy (johnnewman):

yes

OpenStudy (xhawaiiangirlx):

can u subtract 320 and 280?

OpenStudy (johnnewman):

yes is 40

OpenStudy (xhawaiiangirlx):

great

OpenStudy (xhawaiiangirlx):

now we have to must answer this simple math equation: 40/320 * 100

OpenStudy (johnnewman):

12.5 %

OpenStudy (xhawaiiangirlx):

yep

OpenStudy (xhawaiiangirlx):

that is your answer

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