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A certain taxi company charges $3.10 for the first 1/5 of a
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04 Dec 2007, 19:37
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79% (01:49) correct 21% (02:15) wrong based on 494 sessions
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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. 17.50 D. 18.70 E. 19.10
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Re: Taxi Company PLEASE HELP
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04 Dec 2007, 20:59
goodglory wrote: A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 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. 17.50 D. 18.70 E. 19.10
How many 1/5 miles does 8 miles contain?
= 8/(1/5) = 40
Charge for first 1/5 mile = 3.10
Charge for remaining 39 1/5 miles = 39*.4 = 15.6
Total charge = 15.6 + 3.10 = 18.70




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Re: Taxi Company PLEASE HELP
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04 Dec 2007, 19:57
goodglory wrote: A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 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. 17.50 D. 18.70 E. 19.10
so 3.10 for first 1/5mile and .4* so how many 1/5's in 7 and 4/5 miles? well 5 per 7 and 4 for 4/5 So should be.
3.10 + (.4*5)*7 + .4*4 > 3.10 + 14+1.6 = 18.70
D



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Re: Taxi Company PLEASE HELP
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04 Dec 2007, 20:22
goodglory wrote: A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 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. 17.50 D. 18.70 E. 19.10
= 3.10 + (8  0.2) 0.4/0.2
= 3.10 + 15.6
= 18.7



Intern
Joined: 18 Nov 2007
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I am confused because 1/5 of a mile is 1.6.
1/5 of 8 miles is 1.6 and then there are 6.4 miles left?
I don't get it?!



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Re: Taxi Company PLEASE HELP
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04 Dec 2007, 21:45
GMAT TIGER wrote: goodglory wrote: A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 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. 17.50 D. 18.70 E. 19.10 = 3.10 + (8  0.2) 0.4/ 0.2= 3.10 + 15.6 = 18.7
Dear Gmatiger
Can you help me to understand why the result must be divided into 0.2?
I am confused!
Thanks,



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Re: Taxi Company PLEASE HELP
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05 Dec 2007, 16:52
sondenso wrote: GMAT TIGER wrote: goodglory wrote: A certain taxi company charges $3.10 for the first 1/5 of a mile plus 0.40 for each addtional 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. 17.50 D. 18.70 E. 19.10 = 3.10 + (8  0.2) 0.4/ 0.2= 3.10 + 15.6 = 18.7 Dear Gmatiger Can you help me to understand why the result must be divided into 0.2? I am confused! Thanks,
it is just an unitary method:
The cost per 1/5 (0.2) miles is 0.4 beyond first 1/5 (0.2) miles.
so 0.2 miles costs 0.4, then how much 1 mile costs? 2. how 0.4/0.2 = 2.
so 1 mile costs 2, then 7.8 (=80.2) miles cost 7.8x2 = 15.6
so total = 3.1+15.6 = 18.7



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Joined: 12 Jul 2007
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fastest way for me...
8 miles * 5 = 40 fifths of a mile
40 * .40 = $16
$16  .40 = 15.60 + 3.10 = 18.70
breaking it up like that lets you do the mental math in your head almost instantly. so much easier IMO.



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Thank you a million Gmattiger. Your explaination is very helpful!



Intern
Joined: 29 Jun 2011
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goodglory wrote: I am confused because 1/5 of a mile is 1.6. 1/5 of 8 miles is 1.6 and then there are 6.4 miles left?
I don't get it?! I was stuck at the same place and took me more than a 20 mins to figure it out that the 1/5 is actually a 0.2 miles NOT 1.6 miles. If it is a 1.6 miles, if you try to add 1.6 five times, you won't be able to get 8miles..



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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23 Feb 2013, 05:42
I don't understand the calculations for this problem I'm getting 3.12 when I calculate 7.8 * 0.4



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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23 Feb 2013, 06:32



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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23 Feb 2013, 07:08
why are we dividing by 0.2?



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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23 Feb 2013, 07:11



Intern
Joined: 16 Aug 2013
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goodglory wrote: I am confused because 1/5 of a mile is 1.6. 1/5 of 8 miles is 1.6 and then there are 6.4 miles left?
I don't get it?! I just find the problem about the 1.6 in this question, it says 1/5 of a mile, not 1/5 mile of a mile you see, that's why we do not need to use 8 mile divided by 1/5



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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17 Aug 2013, 11:43
goodglory 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. 17.50 D. 18.70 E. 19.10 81/5 = 39/5 1/5 + 39/5 = 3.1 + 0.4 * 39 = 18.7 = (D) (Answer)
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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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13 Nov 2016, 23:27
goodglory 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. 17.50 D. 18.70 E. 19.10 8 Miles = 40 parts... ( Each mile = 1/5 mile ) Charges for 1st part = $ 3.10 Charges for 39 reamaining part = 0.40 * 39 = 15.60 So, Total charges for 8 miles ( ie, 40 parts ) is 18.70 ( ie, 3.10 + 15.60 ) Hence, answer will be (D)
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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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16 Nov 2016, 08:00
goodglory 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. 17.50 D. 18.70 E. 19.10 We know that for the first 1/5 mile of the 8mile trip, the taxi company charges $3.10. For the next 7 4/5 miles, each 1/5 of a mile will cost $0.40. We need to find out how many 1/5s are in 7 4/5. Since 7 4/5 = 39/5, there are 39 1/5s in 7 4/5. Therefore, the total cost of the 8mile trip would be: $3.10 + 39($0.40) $3.10 + $15.60 $18.70 Answer: D
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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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16 Jul 2017, 04:08
Can someone please explain how there are 40, 1/5 miles in 8 miles?



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Re: A certain taxi company charges $3.10 for the first 1/5 of a
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16 Jul 2017, 04:11




Re: A certain taxi company charges $3.10 for the first 1/5 of a &nbs
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