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Diane find 2 and a half cans of paint are just enough to

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Joined: 25 Jan 2013
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Diane find 2 and a half cans of paint are just enough to [#permalink] New post 16 Feb 2013, 11:40
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Question Stats:

62% (01:35) correct 38% (01:01) wrong based on 133 sessions
Diane find 2 and a half cans of paint are just enough to paint one third of her room. How many more cans of paint will she need to finish her room and paint a second room of the same size?

A. 5
B. 7 and a half
C. 10
D. 12 and a half
E. 15
[Reveal] Spoiler: OA
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Re: Diane find 2 and a half cans of paint are just........ [#permalink] New post 18 Feb 2013, 20:10
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antoxavier wrote:
Diane find 2 and a half cans of paint are just enough to paint one third of her room. How many more cans of paint will she need to finish her room and paint a second room of the same size?

A. 5
B. 7 and a half
C. 10
D. 12 and a half
E. 15


Notice that for 1/3 of a room, she used 2.5 cans.
For 2 full rooms (i.e. 6 times the initial work), she will need a total of 2.5 * 6 = 15 cans

So she needs 15 - 2.5 = 12.5 more cans to finish her room and paint another room of the same size.
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Director
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Joined: 24 Jul 2011
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GMAT 1: 780 Q51 V48
GRE 1: 1540 Q800 V740
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Kudos [?]: 261 [0], given: 11

Re: Diane find 2 and a half cans of paint are just........ [#permalink] New post 16 Feb 2013, 21:27
She will need 5 cans to paint the rest of this room and seven and a half for the next room for a total of twleve and half cans.

D it is.
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Director
Director
User avatar
Status:
Joined: 24 Jul 2011
Posts: 547
GMAT 1: 780 Q51 V48
GRE 1: 1540 Q800 V740
Followers: 60

Kudos [?]: 261 [0], given: 11

Re: Diane find 2 and a half cans of paint are just enough to [#permalink] New post 04 Mar 2013, 20:56
Re: Diane find 2 and a half cans of paint are just enough to   [#permalink] 04 Mar 2013, 20:56
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Diane find 2 and a half cans of paint are just enough to

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