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On the number line above, what is the length of segment AB ?
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24 May 2018, 08:00
24 May 2018, 08:00
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A
B
C
D
E
Difficulty:
5%
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Question Stats:
81% (01:16) correct
19%
(01:17)
wrong
based on 382
sessions
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
Attachment:
Question.JPG [ 11.04 KiB | Viewed 8449 times ]
Manager
Joined: 14 Oct 2017
Posts: 189
Given Kudos: 385
GMAT 1: 710 Q44 V41
Re: On the number line above, what is the length of segment AB ?
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24 May 2018, 13:23
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
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
Re: On the number line above, what is the length of segment AB ?
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24 May 2018, 15:24
24 May 2018, 15:24
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Attachment:
Solution.jpg [ 14.95 KiB | Viewed 8292 times ]
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).
