percentage question for the mathematicians

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If a figure increases from 380 to 480, what percentage increase is that? Please explain the reasoning too. Thanks, I'm stupid.

― moley (moley), Monday, 21 March 2005 06:27 (twenty-one years ago)

quick, need the answer in the next 10 mins!!!

― moley (moley), Monday, 21 March 2005 06:28 (twenty-one years ago)

100/380

― ryan (ryan), Monday, 21 March 2005 06:30 (twenty-one years ago)

380 + x380 = 480, where x is the percentage

x380 = 100

x = 100/380

x = .38

― Stormy Davis (diamond), Monday, 21 March 2005 06:36 (twenty-one years ago)

thank yew!!

― moley (moley), Monday, 21 March 2005 06:38 (twenty-one years ago)

actually hang on, ryan was right

― moley (moley), Monday, 21 March 2005 06:41 (twenty-one years ago)

oh shit, yeah, of course -- it's actually .26

haha i am dumm, apparently i forgot how to divide

― Stormy Davis (diamond), Monday, 21 March 2005 06:49 (twenty-one years ago)

(new - old) / old

so, 80 going to 100 would be (100-80)/80, which is 20/80, which is .25 or 25$.

but if 100 goes to 80, then it's (80-100)/100, which is -20/100, which is -.20 or -20%.

you're not stupid.

― dan (dan), Monday, 21 March 2005 07:03 (twenty-one years ago)

Don't coddle him.

― strobisco, Monday, 21 March 2005 07:11 (twenty-one years ago)

The sad thing is I could've answered this easily 23 years ago.

― moley, Monday, 21 March 2005 07:40 (twenty-one years ago)

by what percentage were you younger 23 years ago?

― ken c (ken c), Monday, 21 March 2005 12:15 (twenty-one years ago)

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