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What is the total cost to make 7 long distance telephone calls?

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Status: Preparing for the GMAT
Joined: 02 Nov 2016
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Location: Pakistan
GPA: 3.4
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What is the total cost to make 7 long distance telephone calls? [#permalink]

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New post 04 Mar 2017, 11:39
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

85% (00:32) correct 15% (00:43) wrong based on 13 sessions

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What is the total cost to make 7 long distance telephone calls?

(1) The length of each call was at least 2 minutes.
(2) The rate for long distance calls is $0.32 per minute
[Reveal] Spoiler: OA

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Status: Tutor - BrushMyQuant
Joined: 05 Apr 2011
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Location: India
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Schools: XLRI (A)
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Re: What is the total cost to make 7 long distance telephone calls? [#permalink]

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New post 04 Mar 2017, 21:20
Top Contributor
To answer this question we need to have the rates for all 7 calls and the duration of all 7 calls, or we need to tal time of all 7 calls and price /min (if rate for all calls is same)

(1) This gives us the min duration of each call as 2min, but it neither gives us total duration of all these calls nor the rate for each call.
SO, INSUFFICIENT

(2) This gives us the rate for all the calls but doesnt give us the duration of the calls
SO, INSUFFICIENT

(1) and (2) together, they give us the rate/min but we still do not know the total duration of the 7 calls.
SO, INSUFFICIENT

So, answer will be E.
Hope it helps!
SajjadAhmad wrote:
What is the total cost to make 7 long distance telephone calls?

(1) The length of each call was at least 2 minutes.
(2) The rate for long distance calls is $0.32 per minute

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Re: What is the total cost to make 7 long distance telephone calls?   [#permalink] 04 Mar 2017, 21:20
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What is the total cost to make 7 long distance telephone calls?

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