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Juan bought some paperback books that cost $8 each and some  post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Current Student Joined: 31 Aug 2007 Posts: 369 Followers: 1 Kudos [?]: 112 [0], given: 1 Juan bought some paperback books that cost$8 each and some [#permalink]

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08 Oct 2007, 18:02
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Juan bought some paperback books that cost $8 each and some hardcover books that cost$25 each. If Juan bought more than 10 paperback books, how many hardcover books did he buy?

St1-the total cost of the hardcover books that Juan bought was at least $150. St2-the total cost of all the books that Juan bought was less than$250.

A certain list consists of 5 different integers. Is the average of the two greatest integers in the list greater than 70?

St1-the median of the integers in the list is 70.
St2-the average of the integers in the list is 70.

On his trip from Alba to Benton, Julio drove the first x miles at an average rate of 50mph and the remaining distance at an average rate of 60mph. How long did it take Julio to drive the first x miles?

St1-on his trip, Julio drove for a total of 10 hours and drove a total of 530 miles.
St2-on his trip, it took Julio 4 hrs more to drive the first x miles than to drive the remaining distance.
Current Student
Joined: 31 Aug 2007
Posts: 369
Followers: 1

Kudos [?]: 112 [0], given: 1

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09 Oct 2007, 11:59
for the first question, it seems to me that there are two possibilities:
paperbooks: 11
hardcover: 6
total cost: 238

or

paperbooks: 12
hardcover: 6
total cost: 246

can someone clarify?
Director
Joined: 09 Aug 2006
Posts: 763
Followers: 1

Kudos [?]: 158 [0], given: 0

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09 Oct 2007, 12:31
young_gun wrote:
for the first question, it seems to me that there are two possibilities:
paperbooks: 11
hardcover: 6
total cost: 238

or

paperbooks: 12
hardcover: 6
total cost: 246

can someone clarify?

The question is asking for the number of hardcover books bought. Combining the 2 statements, the number of hardcover books cannot be more than 6 even though the number of paperback books bought can vary (hence, your 2 possibilities).
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