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What are the individual prices of three cameras?

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What are the individual prices of three cameras?  [#permalink]

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New post 24 Jan 2016, 04:30
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

90% (00:40) correct 10% (00:00) wrong based on 34 sessions

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What are the individual prices of three cameras?

(1) The three cameras have an average price of $172.
(2) Two are the same price and sell for $332 together

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Re: What are the individual prices of three cameras?  [#permalink]

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New post 24 Jan 2016, 10:37
Let the individual prices of the cameras be x, y and z.
Statement 1 : x+y+z = (172*3) - 3 variables and 1 equation - Thus, Not sufficient.
Statement 2 : x=y, and x+y = 2x = 332. Thus we can calculate the price of 2 cameras. But there is no information about 3rd camera. Not sufficient.

Combined : x+y= 332, x=y and x+y+z = (172*3) - this is sufficient to calculate x, y and z. Thus C.
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Re: What are the individual prices of three cameras?  [#permalink]

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New post 26 Jan 2016, 20:37
Bunuel wrote:
What are the individual prices of three cameras?

(1) The three cameras have an average price of $172.
(2) Two are the same price and sell for $332 together



to kiss (keep it simple)
I am assuming it is C...(not sure)

My logic was :
Using simple # 100 /3= avg 33.33 but the values could all be diff price combnations
10+20+70=100
50+10+10=100
all have diff prices but same avg
so Stmt 1 does not work alone and therefore eliminate A,D

Not (2) alone because we doesnt allow for us to figure out total value...we only have part of the info we need to solve this

So if you use both then I think u can solve for this

Hope its right *waits for answer key**
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Re: What are the individual prices of three cameras? &nbs [#permalink] 26 Jan 2016, 20:37
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What are the individual prices of three cameras?

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