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On the number line above, what is the length of segment AB ?

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Manager
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Joined: 03 Oct 2016
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On the number line above, what is the length of segment AB ?  [#permalink]

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New post 24 May 2018, 08:00
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

82% (01:18) correct 18% (01:15) wrong based on 96 sessions

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On the number line above, what is the length of segment AB ?

(A) 2.2
(B) 0.38
(C) 0.22
(D) 0.038
(E) 0.022

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Manager
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Joined: 14 Oct 2017
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GMAT 1: 710 Q44 V41
Re: On the number line above, what is the length of segment AB ?  [#permalink]

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New post 24 May 2018, 13:23
It is important to pay close attention to the numbers here. It is required to figure out the exact values so one doesn't get confused with number of decimal zeroes.

A = 4.5225 and B = 4.5445 so the length of segment AB can be calculated by A-B = 0.022

Therefore, the correct answer is E
Manager
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Re: On the number line above, what is the length of segment AB ?  [#permalink]

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New post 24 May 2018, 15:24
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Thanks for attempting the question. This is how I solved it.

Total = Blue Line + Red Line + Green Line
Total = 7.5 units + 10 units + 4.5 units
Total = 12 units + 10 units = 22 units = 22* 0.001 = 0.022.

or

Total = 7.5 units + 10 units + 4.5 units
Total = 12 units + 10 units
Total = 12* 0.001 + 0.01 (we know 10 units = 0.01)
Total = 0.012+0.01
Total = 0.022


Answer: (E).
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Re: On the number line above, what is the length of segment AB ?  [#permalink]

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New post 12 Dec 2019, 12:16
Bunuel can you please explain this? I got 0.22.
GMAT Club Bot
Re: On the number line above, what is the length of segment AB ?   [#permalink] 12 Dec 2019, 12:16
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On the number line above, what is the length of segment AB ?

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