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Samantha's investment portfolio consists of three stocks

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Samantha's investment portfolio consists of three stocks [#permalink]  24 Nov 2012, 08:15
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Difficulty:

25% (medium)

Question Stats:

81% (02:17) correct 19% (01:27) wrong based on 64 sessions
Samantha's investment portfolio consists of three stocks: an airline, a bank, and a computer company. In the month of February, the price of the airline's stock rose by 10%, that of the bank decreased by 15% and that of the computer company also decreased by 15%, but the overall value of her portfolio increased. If Samantha owns equal amounts of all three stocks, which of the following could be the initial prices of the three stocks in the order airline, bank, and computer company respectively?

A. $55,$85, $40 B.$65, $60,$60
C. $65,$55, $90 D.$85, $25,$20
E. $25,$60, $70 [Reveal] Spoiler: OA Moderator Joined: 02 Jul 2012 Posts: 1228 Location: India Concentration: Strategy GMAT 1: 740 Q49 V42 GPA: 3.8 WE: Engineering (Energy and Utilities) Followers: 89 Kudos [?]: 975 [4] , given: 116 Re: Samantha's investment portfolio consists of three stocks [#permalink] 24 Nov 2012, 11:24 4 This post received KUDOS joylive wrote: Samantha's investment portfolio consists of three stocks: an airline, a bank, and a computer company. In the month of February, the price of the airline's stock rose by 10%, that of the bank decreased by 15% and that of the computer company also decreased by 15%, but the overall value of her portfolio increased. If Samantha owns equal amounts of all three stocks, which of the following could be the initial prices of the three stocks in the order airline, bank, and computer company respectively? A.$55, $85,$40
B.$65,$60, $60 C.$65, $55,$90
D.$85,$25, $20 E.$25, $60,$70

Since Samantha owns equal amounts of stocks, the 10% increase alone should set off the 15% decrease in each of the other two stocks. i.e The stock which increased should have a substantially higher value than the two stocks which decreased. Between B & D, D is obviously the safer bet and is the right answer.

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Re: Samantha's investment portfolio consists of three stocks [#permalink]  30 May 2013, 01:26
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somalwar wrote:

Perfect solution by MacFauz here: samantha-s-investment-portfolio-consists-of-three-stocks-142973.html#p1147009

Hint: the question asks for which option is the expression (A*1.1+B*0.85+C*0.85)-(A+B+C) positive.
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Re: Samantha's investment portfolio consists of three stocks [#permalink]  30 May 2013, 01:10
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Re: Samantha's investment portfolio consists of three stocks [#permalink]  26 Jul 2014, 19:32
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Re: Samantha's investment portfolio consists of three stocks   [#permalink] 26 Jul 2014, 19:32
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