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19 May 2021, 07:30
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Difficulty:
15%
(low)
Question Stats:
89% (01:51) correct
11%
(01:48)
wrong
based on 45
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A certain question bank has 64 GMAT questions. Of these, 22 deal with integers, and 25 are Problem Solving (PS) questions. How many questions are PS questions that deal with integers?
(1) Of the questions that deal with integers, there are four more non-PS questions than PS questions.
(2) Of the PS questions, there are seven more questions that do not deal with integers than questions that do deal with integers.
(1) Of the questions that deal with integers, there are four more non-PS questions than PS questions.
(2) Of the PS questions, there are seven more questions that do not deal with integers than questions that do deal with integers.
19 May 2021, 08:25
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Given:: A certain question bank has 64 GMAT questions. Of these, 22 deal with integers, and 25 are Problem Solving (PS) questions.
Asked: How many questions are PS questions that deal with integers?
(1) Of the questions that deal with integers, there are four more non-PS questions than PS questions.
(22-x) - x = 4
x = 9
SUFFICIENT
(2) Of the PS questions, there are seven more questions that do not deal with integers than questions that do deal with integers.[/quote]
(25-x)-x = 7
x = 9
SUFFICIENT
IMO D
Asked: How many questions are PS questions that deal with integers?
| PS | Non PS | Total | |
| Integers | x=? | 22-x | 22 |
| Not integers | 25-x | 17+x | 42 |
| Total | 25 | 39 | 64 |
(1) Of the questions that deal with integers, there are four more non-PS questions than PS questions.
| PS | Non PS | Total | |
| Integers | x=? | 22-x | 22 |
| Not integers | 25-x | 17+x | 42 |
| Total | 25 | 39 | 64 |
x = 9
SUFFICIENT
(2) Of the PS questions, there are seven more questions that do not deal with integers than questions that do deal with integers.[/quote]
| PS | Non PS | Total | |
| Integers | x=? | 22-x | 22 |
| Not integers | 25-x | 17+x | 42 |
| Total | 25 | 39 | 64 |
x = 9
SUFFICIENT
IMO D
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