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by umaa » Sun Aug 10, 2008 4:40 am
explain pls.
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Source: — Data Sufficiency |
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by mals24 » Sun Aug 10, 2008 6:57 am
A detailed worked out solution for this is given on this link:
https://www.beatthegmat.com/hardcover-books-t15572.html
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by rhymes_with_luck » Sun Aug 10, 2008 7:30 am
this is a problem where words will confuse you.

trap 1: number of paperback books more than 10 (>)

total cost is less than (<) 260

now once you rule out 1 and 2 independently and take them together.

from 1 we get hardcover should be greater than or equal to 6.

put number of hardcover = 7

total cost 175

hence cost for paperback less than (260 -175) ==> < 85 if that is the case then he can not buy more than 10 paperback hence only if hardcover book's number is 6 all the conditions get satisfied.

Hence answer is C.
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