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Car rental agency A charges a cents for the first mile of ride

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Director
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Car rental agency A charges a cents for the first mile of ride  [#permalink]

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New post 11 Aug 2018, 04:00
5
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

23% (02:51) correct 77% (02:22) wrong based on 56 sessions

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Car rental agency A charges a cents for the first mile of ride and x cents for every further mile. Car rental agency B charges b cents for the first mile of ride and y cents for every further mile. Can the ratio of the total charges of A and B for a d mile ride be 0.86?
(1) a : b = 3 : 4 and x: y = 17 : 20
(2) a < b and x < y. Had the charge for the first mile of ride of each agency been 12 cents higher, the ratio of the total charges of A and B for a d mile ride would have been at most 9 : 10.

Source:- Time4education
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Re: Car rental agency A charges a cents for the first mile of ride  [#permalink]

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New post 11 Aug 2018, 07:44
but don't you need d miles for the ratio
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Re: Car rental agency A charges a cents for the first mile of ride  [#permalink]

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New post 11 Aug 2018, 08:50
PKN wrote:
Car rental agency A charges a cents for the first mile of ride and x cents for every further mile. Car rental agency B charges b cents for the first mile of ride and y cents for every further mile. Can the ratio of the total charges of A and B for a d mile ride be 0.86?
(1) a : b = 3 : 4 and x: y = 17 : 20
(2) a < b and x < y. Had the charge for the first mile of ride of each agency been 12 cents higher, the ratio of the total charges of A and B for a d mile ride would have been at most 9 : 10.

Source:- Time4education


Can someone please explain this one to me? I tried to understand why it is A rather than E and could not get it.

1) a = 3b and x = (17/20)y
Plugged those values into the equation given in the stem and 3b + (17/20)y * (d-1) but this doesn't seem sufficient to me

Thank you!
Director
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Re: Car rental agency A charges a cents for the first mile of ride  [#permalink]

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New post 12 Aug 2018, 08:02
3
1
jch103020 wrote:
PKN wrote:
Car rental agency A charges a cents for the first mile of ride and x cents for every further mile. Car rental agency B charges b cents for the first mile of ride and y cents for every further mile. Can the ratio of the total charges of A and B for a d mile ride be 0.86?
(1) a : b = 3 : 4 and x: y = 17 : 20
(2) a < b and x < y. Had the charge for the first mile of ride of each agency been 12 cents higher, the ratio of the total charges of A and B for a d mile ride would have been at most 9 : 10.

Source:- Time4education


Can someone please explain this one to me? I tried to understand why it is A rather than E and could not get it.

1) a = 3b and x = (17/20)y
Plugged those values into the equation given in the stem and 3b + (17/20)y * (d-1) but this doesn't seem sufficient to me

Thank you!


Hi rachitbechem, jch103020,

Official explanation is enclosed for your reference.
Attachments

OE.JPG
OE.JPG [ 35.2 KiB | Viewed 674 times ]


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Re: Car rental agency A charges a cents for the first mile of ride  [#permalink]

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New post 12 Aug 2018, 18:59
PKN wrote:
Car rental agency A charges a cents for the first mile of ride and x cents for every further mile. Car rental agency B charges b cents for the first mile of ride and y cents for every further mile. Can the ratio of the total charges of A and B for a d mile ride be 0.86?
(1) a : b = 3 : 4 and x: y = 17 : 20
(2) a < b and x < y. Had the charge for the first mile of ride of each agency been 12 cents higher, the ratio of the total charges of A and B for a d mile ride would have been at most 9 : 10.

Source:- Time4education


Good question but I doubt GMAT will entertain such questions since it needs time to think about
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Re: Car rental agency A charges a cents for the first mile of ride &nbs [#permalink] 12 Aug 2018, 18:59
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Car rental agency A charges a cents for the first mile of ride

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