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A certain taxi company charges $3.10 for the first 1/5 of a mile plus

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A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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New post 01 Jun 2011, 13:31
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A certain taxi company charges $3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. $15.60
B. $16.00
C. $17.80
D. $18.70
E. $19.10

OPEN DISCUSSION OF THIS QUESTION IS HERE: a-certain-taxi-company-charges-3-10-for-the-first-1-5-of-a-56649.html
[Reveal] Spoiler: OA
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Manager
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Location: Tennessee
Schools: Belmont University
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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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New post 01 Jun 2011, 13:45
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Shalom!
The first mile is computed as:
$3.10 + $1.60 ( $0.40*4) = $4.70
The second thru eighth miles are computed as:
$2.00 ( $0.40*5) X 7 miles = $14.00

Therefore $4.70 + $14.00= $ 18.70
The answer is D.

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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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New post 01 Jun 2011, 13:56
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total miles 40 (8/1/5)
first 1/5 miles = 3.1
next 39 = 39*.4 = 15.6
total 18.7
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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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New post 01 Jun 2011, 15:52
first 1/5 mile charge = $3.10

rest of the miles = 8 - (1/5) = 39/5

charge for the rest of the miles = 39 *0.4 = 15.6

total charge = 3.10+15.6 = 18.7

Answer is D.
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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus [#permalink]

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New post 15 Nov 2014, 05:01
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MitDavidDv wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. $15.60
B. $16.00
C. $17.80
D. $18.70
E. $19.10


1/5 miles = 0.2 miles.

The cost of 8 miles long ride would be $3.10 for the first 0.2 miles plus (8-0.2)/0.2*0.4 = $3.1 + $15.6 = $18.7.

Answer: D.

OPEN DISCUSSION OF THIS QUESTION IS HERE: a-certain-taxi-company-charges-3-10-for-the-first-1-5-of-a-56649.html
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Re: A certain taxi company charges $3.10 for the first 1/5 of a mile plus   [#permalink] 15 Nov 2014, 05:01
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