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17 Dec 2012, 08:30
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A restaurant meal cost $35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between (A)$40 and $42 (B)$39 and $41 (C)$38 and $40 (D)$37 and $39 (E)$36 and $37 [Reveal] Spoiler: OA Math Expert Joined: 02 Sep 2009 Posts: 39718 Re: A restaurant meal cost$35.50 and there was no tax. If the [#permalink]

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17 Dec 2012, 08:34
A restaurant meal cost $35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between (A)$40 and $42 (B)$39 and $41 (C)$38 and $40 (D)$37 and $39 (E)$36 and $37 The total amount for the meal was between 35.5*1.1=39.05 and 35.5*1.15=~41. Only option which covers all possible values of the meal is B. Answer: B. _________________ Intern Joined: 20 Apr 2013 Posts: 1 A restaurant meal cost$35.50 and there was no tax. If the tip w [#permalink]

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09 May 2013, 01:05
just came across this question in OG13 and I thought answer should be A

Let Total paid be T
so 39.05<T<40.83. So it fits "inside" A, 40<T<42 so to speak.
B states that 39<T<41, which works for the right hand side of T but not for the left. (E.g. if T is 39.01, then tip is only 9.89% of 35.50 - less than 10% requirement in the question)
Math Expert
Joined: 02 Sep 2009
Posts: 39718

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09 May 2013, 10:55
Lower End:
NA=35.50(1+10/100)
NA=35.50(110/100)
NA=39.05

Upper End:
NA=35.50(1+15/100)
NA=35.50(115/100)
NA=40.825

Rounding = 39-41

B
Intern
Joined: 04 Jul 2013
Posts: 2
GMAT 1: 530 Q48 V16
GMAT 2: 620 Q49 V26

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16 Jul 2014, 16:18
A restaurant meal cost $35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then total amount paid must have been betweem: A.$40 and $42 B.$39 and $41 C.$38 and 40
D. $37 and$39
E. $36 and$37

I'll post the question in the next post. Thanks!
Senior Manager
Joined: 15 Aug 2013
Posts: 311
A restaurant meal cost $35.50 and there was no tax. [#permalink] ### Show Tags 16 Jul 2014, 16:20 Hi, I'm stuck on something rather trivial on this relatively easy question. After calculating 10%, I get 39.05and 40.82. I didn't pick B because I noticed that 39 is less than$39.05, so a number like 39.02 would've made this wrong. Can someone explain why i'm wrong?

Thanks!
Math Expert
Joined: 02 Sep 2009
Posts: 39718
Re: A restaurant meal cost $35.50 and there was no tax. If the [#permalink] ### Show Tags 16 Jul 2014, 16:25 russ9 wrote: A restaurant meal cost$35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then total amount paid must have been betweem:

A. $40 and$42
B. $39 and$41
C. $38 and 40 D.$37 and $39 E.$36 and $37 I'll post the question in the next post. Thanks! Merging similar topics. Please refer to the discussion above. P.S. Please search before posting. Thank you. _________________ Re: A restaurant meal cost$35.50 and there was no tax. If the   [#permalink] 16 Jul 2014, 16:25
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