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QOTD#27 Keri, Neill, and Rich use toilet paper in their apar

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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4720
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1622 [0], given: 385

CAT Tests
QOTD#27 Keri, Neill, and Rich use toilet paper in their apar [#permalink] New post 14 May 2017, 05:15
Expert's post
00:00

Question Stats:

50% (01:28) correct 50% (00:00) wrong based on 2 sessions
Keri, Neill, and Rich use toilet paper in their apartment in a ratio of 3:2:2. Rich buys two cases of toilet paper online for everyone’s use at 28 rolls per case, an average of $3.50/roll and a $14 delivery charge. If they each contribute to the cost of the toilet paper in direct proportion to the amount they use, how much must Keri contribute?

Drill 1
Question: 7
Page: 337/338


[Reveal] Spoiler: OA
90

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4720
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1622 [0], given: 385

CAT Tests
Re: QOTD#27 Keri, Neill, and Rich use toilet paper in their apar [#permalink] New post 04 Jun 2017, 14:52
Expert's post
Explanation


The three roommates spend a total of $210 on toilet paper. If you make your ratio box you will see that your ratio total is 7 and your actual total is 210, so your multiplier is 30.
Keri therefore needs to contribute $90.00 to the cost of the toilet paper.
_________________

Sandy
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Re: QOTD#27 Keri, Neill, and Rich use toilet paper in their apar   [#permalink] 04 Jun 2017, 14:52
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QOTD#27 Keri, Neill, and Rich use toilet paper in their apar

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