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

Question

https://gmatclub.com/forum/download/file.php?id=41426 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 Question.JPG

Masterscorp · Answer

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

seed · Answer

Solution.jpg 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).

Rocknrolla21 · Answer

Bunuel  can you please explain this? I got 0.22.

icandoit1995 · Answer

My answer
A - B = A -2 - (B - 2) 
-> A - B in the figure shown is equal to 4.54xx - 4.52 = 0.02... -> E is the correct answer

surendrasaini1 · Answer

Point A = 4.5225
Point B = 4.5445
 the difference comes out to be =4.5445 - 4.5225 
 = 0.022

Choice E

Thanks

MathRevolution · Answer

The difference between 4.52 and 4.53 is 10 units that mean  \frac{{4.53 - 4.52} }{ {10} }

=>  \frac{0.01 }{ 10}  = 0.01 increment

=> A is midpoint of 4.522 and 4.523. Hence A is at  \frac{(4.522 + 4.523)}{ 2}  = 4.5225

=> Similarly, B is midpoint of 4.544 and 4.545. Hence B is at  \frac{(4.544 + 4.545)}{ 2}  = 4.5445

The distance between A and B is the length of line segment AB: 4.5445 - 4.5225 = 0.022

Answer E

Hoozan · Answer

4.53 - 4.52 = 0.01 and there are 10 spaces between 0.01. This means that each space on the number line = 0.001.

Now from point (A) to point (B) we have 22 (0.001) spaces = 20(0.001) + 2(0.001) spaces 
= 0.02 + 0.002 
= (E) 0.022

ManifestDreamMBA · Answer

Just add the values to 4.522

(A) 2.2 + 4.522 = 6.722 (too big/ not even on the scale)
(B) 0.38 + 4.522 = 4.902 (too big/ not even on the scale)
(C) 0.22 + 4.522 = 4.742 (too big/ not even on the scale)
(D) 0.038 + 4.522 = 4.590 (too big/ not even on the scale)
(E) 0.022 + 4.522 = 4.544 In range

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

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

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