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26 Jul 2014, 10:36
2
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Difficulty:

5% (low)

Question Stats:

82% (00:58) correct 18% (00:47) wrong based on 228 sessions

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A store sells erasers for 0.23$per piece and pencil for 0.11$ per piece. How many eraser and pencils did Jessica buy?

(1) She bough 5 erasers
(2) She spent total of 1.70$[Reveal] Spoiler: OA _________________ Like my post Send me a Kudos It is a Good manner. My Debrief: http://gmatclub.com/forum/how-to-score-750-and-750-i-moved-from-710-to-189016.html Kudos [?]: 607 [2], given: 298 Math Expert Joined: 02 Sep 2009 Posts: 41634 Kudos [?]: 124124 [0], given: 12072 Re: A store sells erasers for 0.23$ per piece and pencil for 0.1 [#permalink]

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26 Jul 2014, 10:47
A store sells erasers for 0.23$per piece and pencil for 0.11$ per piece. How many eraser and pencils did Jessica buy?

(1) She bough 5 erasers. Clearly insufficient.

(2) She spent total of 1.70$--> $$0.23e+0.11p=1.70$$ --> $$23e+11p=170$$ --> by trial and error we can find that the only non-negative integer solution for this equation is e=5 and p=5. Sufficient. Answer: B. _________________ Kudos [?]: 124124 [0], given: 12072 Math Expert Joined: 02 Sep 2009 Posts: 41634 Kudos [?]: 124124 [0], given: 12072 Re: A store sells erasers for 0.23$ per piece and pencil for 0.1 [#permalink]

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26 Jul 2014, 10:47
Bunuel wrote:
A store sells erasers for 0.23$per piece and pencil for 0.11$ per piece. How many eraser and pencils did Jessica buy?

(1) She bough 5 erasers. Clearly insufficient.

(2) She spent total of 1.70$--> $$0.23e+0.11p=1.70$$ --> $$23e+11p=170$$ --> by trial and error we can find that the only non-negative integer solution for this equation is e=5 and p=5. Sufficient. Answer: B. Similar questions to practice: eunice-sold-several-cakes-if-each-cake-sold-for-either-109602.html martha-bought-several-pencils-if-each-pencil-was-either-a-100204.html a-rental-car-agency-purchases-fleet-vehicles-in-two-sizes-a-105682.html joe-bought-only-twenty-cent-stamps-and-thirty-cent-stamps-106212.html a-certain-fruit-stand-sold-apples-for-0-70-each-and-bananas-101966.html joanna-bought-only-0-15-stamps-and-0-29-stamps-how-many-101743.html Hope it helps. _________________ Kudos [?]: 124124 [0], given: 12072 GMAT Club Legend Joined: 09 Sep 2013 Posts: 17567 Kudos [?]: 270 [0], given: 0 Re: A store sells erasers for 0.23$ per piece and pencil for 0.1 [#permalink]

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16 Aug 2016, 11:15
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Re: A store sells erasers for 0.23$per piece and pencil for 0.1 [#permalink] 16 Aug 2016, 11:15 Similar topics Replies Last post Similar Topics: 3 A certain store sells chairs individually or in sets of 6 4 07 Feb 2017, 06:59 Two toy stores, A and B, sell Hot-Wheels. The regular price at store A 2 27 Jun 2017, 23:46 Janel was shopping for pencils and pens at a Fung's Stationary Store 2 18 Sep 2017, 10:41 A man purchased some pens, pencils and erasers. Can the number of eras 1 05 Jul 2017, 00:46 12 A stationery store sells pens and pencils. If the price of 8 29 Mar 2017, 00:14 Display posts from previous: Sort by # A store sells erasers for 0.23$ per piece and pencil for 0.1

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