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Mathematics 18 Online
OpenStudy (anonymous):

If 25 percent of x equals 35 percent of x, what is 45 percent of x?

OpenStudy (baldymcgee6):

0

OpenStudy (anonymous):

why?

OpenStudy (baldymcgee6):

how can 25% of something = 35% of something?

OpenStudy (anonymous):

I don't know

OpenStudy (anonymous):

proportions?

OpenStudy (baldymcgee6):

I don't know, maybe there is more than one answer, but x could be zero

OpenStudy (anonymous):

its a grid-in problem

OpenStudy (anonymous):

Those are the questions I have most trouble with on the SATs

OpenStudy (anonymous):

but how did you get to that solution?

OpenStudy (baldymcgee6):

I just thought about the question logically before even trying anything mathematically.

OpenStudy (anonymous):

I don't really understand...

OpenStudy (anonymous):

This isn't as easy as finding the minimum amount of marbles needed be taken out

OpenStudy (baldymcgee6):

okay, lets say x = 100, how can 25% of 100 = 35% of 100? It can't, and this will be the same for any number other than zero i figure

OpenStudy (anonymous):

ahh

OpenStudy (baldymcgee6):

if x = 0, then 25% of 0 = 35% of 0

OpenStudy (anonymous):

ahh

OpenStudy (anonymous):

now I understand

OpenStudy (anonymous):

There is only one x value, not two?

OpenStudy (baldymcgee6):

right, they would have used different variables if there was more than one value

OpenStudy (anonymous):

k

OpenStudy (anonymous):

Now let me post a geometry problem

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