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United Telephone charges a base rate of $10.00 for service, plus an ad
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02 Apr 2021, 05:09
02 Apr 2021, 05:09
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Question Stats:
94% (00:58) correct
5% (01:22) wrong based on 19 sessions
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United Telephone charges a base rate of $10.00 for service, plus an additional charge of $0.25 per minute. Atlantic Call charges a base rate of $12.00 for service, plus an additional charge of $0.20 per minute. For what number of minutes would the bills for each telephone company be the same?
A. 2 minutes
B. 10 minutes
C. 20 minutes
D. 40 minutes
E. 60 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 2 minutes
B. 10 minutes
C. 20 minutes
D. 40 minutes
E. 60 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Retired Moderator
Joined: 10 Apr 2015
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Re: United Telephone charges a base rate of $10.00 for service, plus an ad
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02 Apr 2021, 05:41
02 Apr 2021, 05:41
Carcass wrote:
United Telephone charges a base rate of $10.00 for service, plus an additional charge of $0.25 per minute. Atlantic Call charges a base rate of $12.00 for service, plus an additional charge of $0.20 per minute. For what number of minutes would the bills for each telephone company be the same?
A. 2 minutes
B. 10 minutes
C. 20 minutes
D. 40 minutes
E. 60 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 2 minutes
B. 10 minutes
C. 20 minutes
D. 40 minutes
E. 60 minutes
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Let x = the number of minutes used
United Telephone charge = $10.00 + $0.25x
Atlantic Call charge = $12.00 + $0.20x
For what number of minutes would the bills for each telephone company be the same?
In other words, for what value of x does $10.00 + $0.25x EQUAL $12.00 + $0.20x?
Let's find out....
10.00 + 0.25x = 12.00 + 0.20x
Subtract 10 from both sides to get: 0.25x = 2 + 0.20x
Subtract 0.20x from both sides to get: 0.05x = 2
Solve: x = 2/0.05 = 40
ASIDE: If you're not crazy about dividing by decimals, you can always take 2/0.05 and create an EQUIVALENT fraction first.
Take: 2/0.05
Multiply top and bottom by 100 to get: 200/5, which equals 40
Answer: D
Cheers,
Brent
gmatclubot
Re: United Telephone charges a base rate of $10.00 for service, plus an ad [#permalink]
02 Apr 2021, 05:41
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