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A telecom company charges in the following manner each call costs

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Location: India
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A telecom company charges in the following manner each call costs [#permalink]

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New post 19 Oct 2017, 05:00
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Difficulty:

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Question Stats:

91% (01:04) correct 9% (02:30) wrong based on 23 sessions

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A telecom company charges in the following manner each call costs a minimum of 50 cents which includes the talk time for
the first three minutes; thereafter, the company charges 20 cents for every five minutes over the next fifteen minutes;
thereafter, the company charges a nominal two cents per minute. Jack made a call and spoke for exactly 50 minutes. What
was the total cost of his call?


A. $0.72
B. $0.92
C. $1.1
D. $1.74
E. $3.14
[Reveal] Spoiler: OA

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Naveen
email: nkmungila@gmail.com
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Kudos [?]: 101 [1], given: 59

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Joined: 28 Aug 2017
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Kudos [?]: 3 [0], given: 57

A telecom company charges in the following manner each call costs [#permalink]

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New post 19 Oct 2017, 05:20
nkmungila wrote:
A telecom company charges in the following manner each call costs a minimum of 50 cents which includes the talk time for
the first three minutes; thereafter, the company charges 20 cents for every five minutes over the next fifteen minutes;
thereafter, the company charges a nominal two cents per minute. Jack made a call and spoke for exactly 50 minutes. What
was the total cost of his call?


A. $0.72
B. $0.92
C. $1.1
D. $1.74
E. $3.14


First 3 minutes = 50 cents
After that, every 5 minutes until 15 minutes = 20 cents
After that, per minute = 2 cents
Jack's call = 50 minutes = (3 + 15 + 32) minutes
Cost = [50 + 3(20) + 32(2)] cents = 50 + 60 + 64 = 174 cents = $1.74

Therefore, answer is D.

Kudos [?]: 3 [0], given: 57

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Joined: 22 May 2016
Posts: 1117

Kudos [?]: 398 [0], given: 640

A telecom company charges in the following manner each call costs [#permalink]

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New post 19 Oct 2017, 06:25
nkmungila wrote:
A telecom company charges in the following manner each call costs a minimum of 50 cents which includes the talk time for
the first three minutes; thereafter, the company charges 20 cents for every five minutes over the next fifteen minutes;
thereafter, the company charges a nominal two cents per minute. Jack made a call and spoke for exactly 50 minutes. What
was the total cost of his call?

A. $0.72
B. $0.92
C. $1.1
D. $1.74
E. $3.14

Jack's phone call = 50 minutes

3 minutes= +50 cents
(+3 mins)

5+5+5 mins= +20¢ +20¢ +20¢= +60¢
(+15 mins)
(+3 +15 = +18 mins used)

Remaining minutes:
(50 total - 18 used) = 32 mins left

32 minutes at 2 cents per minute =
(2¢)(32) = +64 cents

+50 cents
+60 cents
+64 cents
174 cents

174 cents = $1.74

Answer D

Kudos [?]: 398 [0], given: 640

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Joined: 14 Oct 2015
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Location: United States (CA)
Re: A telecom company charges in the following manner each call costs [#permalink]

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New post 24 Oct 2017, 05:04
nkmungila wrote:
A telecom company charges in the following manner each call costs a minimum of 50 cents which includes the talk time for
the first three minutes; thereafter, the company charges 20 cents for every five minutes over the next fifteen minutes;
thereafter, the company charges a nominal two cents per minute. Jack made a call and spoke for exactly 50 minutes. What
was the total cost of his call?


A. $0.72
B. $0.92
C. $1.1
D. $1.74
E. $3.14


For the first 3 minutes, the cost of the call is 50 cents. For the next 15 minutes, the cost is 20 x (15/5) = 20 x 3 = 60 cents. For the last 50 - 3 - 15 = 32 minutes, the cost is 2 x 62 = 64 cents. Thus, the total cost of the 50-minute call is:

50 + 60 + 64 = 174 cents = $1.74

Answer: D
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Founder and CEO

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Kudos [?]: 1015 [0], given: 3

Re: A telecom company charges in the following manner each call costs   [#permalink] 24 Oct 2017, 05:04
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