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02 Aug 2021, 06:10
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Born After
1990: 50 Fan of Earlier
Movies: 125
1990: 50 Fan of Earlier
Movies: 125
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
94% (02:16) correct
6%
(02:16)
wrong
based on 363
sessions
History
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Michael took a survey on a social media site of 200 of his friends who identified as fans of a certain series of science-fiction movies. He found that, of the 150 of his friends born on or before the year 1990, 80% said they were fans only of the earlier movies, while the remainder were fans only of the later movies. Of the remainder of his friends, however, 90% said they were fans only of the later movies, while the remainder were fans only of the earlier movies.
In the table below, select the total number of people surveyed who were born after the year 1990 and the total number of people surveyed who preferred the earlier movies.
In the table below, select the total number of people surveyed who were born after the year 1990 and the total number of people surveyed who preferred the earlier movies.
|
Born After 1990 |
Fan of Earlier Movies |
|
| 50 | ||
| 75 | ||
| 100 | ||
| 125 | ||
| 150 | ||
| 175 |
ShowHide Answer
Official Answer
Born After
1990: 50 Fan of Earlier
Movies: 125
1990: 50 Fan of Earlier
Movies: 125
02 Aug 2021, 12:19
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This is an easy one
200 total friends --> 150 were born on or before 1990, so remaining (200 - 150 = ) 50 were born after 1990. This is the first blank
Of the 150 were born on or before 1990, 80% were fans only of earlier movies = 80% * 150 = 120
In remainder friends i.e., 50 friends, 10% were fans of earlier movies = 5
So total = 125 This is second blank
200 total friends --> 150 were born on or before 1990, so remaining (200 - 150 = ) 50 were born after 1990. This is the first blank
Of the 150 were born on or before 1990, 80% were fans only of earlier movies = 80% * 150 = 120
In remainder friends i.e., 50 friends, 10% were fans of earlier movies = 5
So total = 125 This is second blank
Sajjad1994
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