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30 Jun 2022, 22:30
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
73% (02:23) correct
27%
(02:37)
wrong
based on 318
sessions
History
Date
Time
Result
Not Attempted Yet
According to a report, 7% of students did not use a computer to play games, 11% did not use a computer to write reports, and 95% did use a computer for at least one of the purposes. What percent of the students according to the report did use a computer for both the purposes – play games and write reports?
(A) 13%
(B) 56%
(C) 77%
(D) 87%
(E) 91%
(A) 13%
(B) 56%
(C) 77%
(D) 87%
(E) 91%
01 Jul 2022, 01:06
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Given: According to a report, 7% of students did not use a computer to play games, 11% did not use a computer to write reports, and 95% did use a computer for at least one of the purposes.
Asked: What percent of the students according to the report did use a computer for both the purposes – play games and write reports?
According to a report, 7% of students did not use a computer to play games, 11% did not use a computer to write reports, and 95% did use a computer for at least one of the purposes.
IMO D
Asked: What percent of the students according to the report did use a computer for both the purposes – play games and write reports?
According to a report, 7% of students did not use a computer to play games, 11% did not use a computer to write reports, and 95% did use a computer for at least one of the purposes.
| Play games | ~ Play games | Total | |
| Write reports | 100%-11%=89% | ||
| ~Write reports | 100%-95%=5% | 11% | |
| Total | 100%-7%=93% | 7% | 100% |
| Play games | ~ Play games | Total | |
| Write reports | 93%-6%=87% | 89% | |
| ~Write reports | 11%-5%=6% | 5% | 11% |
| Total | 93% | 7% | 100% |
IMO D
17 Jul 2022, 04:02
Kudos
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100 = 93+89+x+5
X=87
X=87
