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# tick.PNG If the successive tick marks shown on the number

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Manager
Joined: 07 Jan 2010
Posts: 147
Location: So. CA
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Kudos [?]: 22 [0], given: 57

tick.PNG If the successive tick marks shown on the number [#permalink]  26 Mar 2011, 08:04
00:00

Difficulty:

35% (medium)

Question Stats:

82% (01:27) correct 18% (00:57) wrong based on 39 sessions
Attachment:

tick.PNG [ 4.14 KiB | Viewed 4593 times ]

If the successive tick marks shown on the number line above are equally spaced and if x and y are the
numbers designating the end points of intervals as shown, what is the value of y ?
(1) x = 1/2
(2) y – x = 2/3

OA after a few posts
[Reveal] Spoiler: OA

Last edited by gtr022001 on 26 Mar 2011, 13:00, edited 1 time in total.
Director
Status: Matriculating
Affiliations: Chicago Booth Class of 2015
Joined: 03 Feb 2011
Posts: 926
Followers: 13

Kudos [?]: 219 [1] , given: 123

Re: successive tick marks shown on the number line [#permalink]  26 Mar 2011, 08:12
1
KUDOS
I think it's D.
S1 tells me that smallest division is 1/6 hence y is 7/6

S2 tells me that smallest division is 2/3 / 4 or 1/6. Hence y is 7/6

Essentially s1 and s2 provide the exact same information.

Hence D

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Joined: 16 Nov 2010
Posts: 1684
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 31

Kudos [?]: 342 [2] , given: 36

Re: successive tick marks shown on the number line [#permalink]  26 Mar 2011, 19:11
2
KUDOS
INterval between each tick = t

=> x = 3t

Now from (1) x = 1/2

so t = 1/6

hence y = 7 * (1/t) = 7/6

which is sufficient

From (2)

x = 3t

y = 7t

=> 4t = 2/3

=> t = 1/6

Thus, y = 1/2 + 2/3 = 7/6

which is sufficient

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Director
Joined: 01 Feb 2011
Posts: 763
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Kudos [?]: 68 [0], given: 42

Re: successive tick marks shown on the number line [#permalink]  02 Apr 2011, 17:44
1. x = 1/2.

enough to find the that each division/spacing is 1/6
enough to find the value of y. (as y would be 4/6+x)

2. y-x = 2/3
=> y is at a distance of 2/3 from x.

enough to find out each spacing is 1/6
and that is enough to find out y.

Manager
Joined: 17 Jan 2011
Posts: 231
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Kudos [?]: 25 [0], given: 4

Re: successive tick marks shown on the number line [#permalink]  04 Apr 2011, 20:58
(1) x = 1/2
If 3 units represent 1/2, one can find the value of y by unitary method

(2) y – x = 2/3
if 4 units represent 2/3, one can find the value of y by unitary method

So, D.
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Re: successive tick marks shown on the number line   [#permalink] 04 Apr 2011, 20:58
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