Algebraically retarded

Deebaser

Good morning H/A,


I have these values that have been discounted 35% of x and I need to find x. I haven't had my coffee yet and just thought of this approach in the shower. It's a good approach, but every way I look at the actual math in the fog of morning, I just can't crack it.

plz halp.

Fuzzywhale

bad math was here
see below.

milehigh

The way I'm reading it is that you've got some value (let's say 65) that's been discounted 35% and you want to know the original value (basically a problem like "You go to the store and see a lol on sale for $65, it's been marked down 35% of the original price, what was the original price?")

Maybe? If that's the case you're going to take your discounted value (which is actually equal to 65% of the original price, since it's discounted by 35%) and divide it by that percentage, so 65/.65 says that original cost (x) is $100.

This would look like values=.65x, where your values are already discounted by 35%.

Not sure if that's what you were looking for, hopefully it helped some.

Edited for bad grammar. It's a math thread, but that's no excuse

FunkyWaltDogg

Yep. One simple way to think of it is that to apply a 35% discount you multiply the original cost x by (100% - 35%), so to undo that you reverse the operation.

x * (1 - .35) = <your value>

x = <your value> / (1 - .35)

Deebaser

That is exactly it, Funky!
Thank you very much everyone. I should probably be ashamed of myself.

Please lock.