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There are a total of 840 seats in a school auditorium. During an assembly, students occupied 50% of the seats in the auditorium. How many seats did the students occupy during this assembly?
Difficulty: Easy
A:
25
B:
50
C:
420
D:
790
Isabel grows potatoes in her garden. This year, she harvested 760 potatoes and saved 10% of them to plant next year. How many of the harvested potatoes did lsabel save to plant next year?
Difficulty: Easy
A:
66
B:
76
C:
84
D:
86
According to the 2010 Census, the adult population aged 18 years or greater in the United States in 2010 was 234,564,071. In 2010, a survey was conducted among a randomly chosen sample of adults aged 18 years or greater in the United States about their preference to live in a warm climate or cool climate. The table below displays a summary of the survey results.
| Climate Preferences | ||||
| Warm | Cool | No preference | Total | |
|---|---|---|---|---|
| 18-35 years old | 295 | 168 | 45 | 508 |
| 36-50 years old | 246 | 123 | 41 | 410 |
| 51-65 years old | 238 | 117 | 48 | 403 |
| Greater than 65 years old | 137 | 78 | 64 | 279 |
| Total | 916 | 486 | 198 | 1,600 |
Which of the following is closest to the difference between the percentage of adults aged 18–50 years who responded “warm” and the percentage of adults aged 51 years or greater who responded “warm”?
Difficulty: Hard
A:
4%
B:
5%
C:
10%
D:
18%
Lani spent 15% of her 8-hour workday in meetings. How many minutes of her workday did she spend in meetings?
Difficulty: Easy
A:
1.2
B:
15
C:
48
D:
72
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