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# Average price

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Intern
Joined: 29 Sep 2009
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06 Oct 2009, 23:28
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Q.14/ If 65% laptops A were sold at prices between $200 and$250, 30% laptops B were sold at prices between $450 and$500, 5% laptops C were sold at prices between $3,000 and$3,100. Which of the following could be the average (arithmetic mean) of the prices of all laptops sold?

A/ $240 B/$320
C/ $410 D/$440
E/ $510 Director Joined: 04 Jan 2008 Posts: 912 Followers: 68 Kudos [?]: 561 [1] , given: 17 Re: Average price [#permalink] ### Show Tags 06 Oct 2009, 23:41 1 This post received KUDOS its a Weighted Average is it D?440 I am getting 441.25 .65(225)+.30(475)+.05(3050) andrewng wrote: Q.14/ If 65% laptops A were sold at prices between$200 and $250, 30% laptops B were sold at prices between$450 and $500, 5% laptops C were sold at prices between$3,000 and $3,100. Which of the following could be the average (arithmetic mean) of the prices of all laptops sold? A/$240
B/ $320 C/$410
D/ $440 E/$510

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Manager
Joined: 18 Jul 2009
Posts: 169
Location: India
Schools: South Asian B-schools
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Kudos [?]: 95 [0], given: 37

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07 Oct 2009, 03:00
good explination nitya38...OA D
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Bhushan S.
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Joined: 02 Aug 2009
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Kudos [?]: 3253 [0], given: 100

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07 Oct 2009, 03:25
D
max avg by taking max costs is 467.50.....lly min avg possible is 415...
only value within the range is 440 ,so the ans
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Senior Manager
Joined: 18 Sep 2009
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Kudos [?]: 421 [0], given: 2

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07 Oct 2009, 09:58

65*225+30*475+5*3050 = 14625+14250+15250 =44125

44125/100 =441.25 =440
Re: Average price   [#permalink] 07 Oct 2009, 09:58
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