question

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question

by moshes123 » Wed Apr 29, 2009 7:20 am
hi all
gmat quantity problem attached
I think it's C but GmapPrep says it's B can anyone explain??

Image

thank U!

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Re: question

by bluementor » Wed Apr 29, 2009 8:04 am
It's even cheaper to buy from store Z:

After sales tax, the price is:

(10% of $90) + $90 = $99

And after receiving a rebate (after tax):

$99 - $10 = $89

Choose B

-BM-