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QOTD#27 Keri, Neill, and Rich use toilet paper in their apar
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14 May 2017, 05:15
14 May 2017, 05:15
Expert Reply
00:00
Question Stats:
63% (01:52) correct
36% (00:46) wrong based on 11 sessions
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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
Question: 7
Page: 337/338
Show: :: OA
90
Re: QOTD#27 Keri, Neill, and Rich use toilet paper in their apar
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04 Jun 2017, 14:52
04 Jun 2017, 14:52
Expert Reply
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.
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.
Re: QOTD#27 Keri, Neill, and Rich use toilet paper in their apar
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10 Feb 2019, 07:28
10 Feb 2019, 07:28
sandy wrote:
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.
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.
Hello,
Please can you elaborate more on how did we get 210 $ and how did we know that the multiplier is 30?
thanks
