High School

The table shows the distribution of ages of 200 people in a movie theater. According to the table, the number of people with ages from 30 to 69 is how much greater than the total number of people with ages less than 30 and people with ages greater than 69?

Age Group | Percentage
---|---
20 to 29 | 5%
30 to 39 | 15%
40 to 49 | 24%
50 to 59 | 35%
60 to 69 | 16%
70 to 79 | 5%

Options:
A. 7
B. 180
C. 170
D. 160
E. 90
F. 80

Answer :

The number of people with ages from 30 to 69 in the movie theater is 170 greater than the total number of people with ages less than 30 and people with ages greater than 69.

According to the given distribution, the percentage of people in the age ranges of 30 to 39, 40 to 49, 50 to 59, and 60 to 69 are 15%, 24%, 35%, and 16% respectively. To calculate the number of people in each of these age ranges, we can multiply the corresponding percentage by the total number of people (200).

For the age range of 30 to 39, there would be 0.15 * 200 = 30 people.

For the age range of 40 to 49, there would be 0.24 * 200 = 48 people.

For the age range of 50 to 59, there would be 0.35 * 200 = 70 people.

For the age range of 60 to 69, there would be 0.16 * 200 = 32 people.

The total number of people with ages from 30 to 69 is the sum of these values: 30 + 48 + 70 + 32 = 180 people.

To find the number of people with ages less than 30 and people with ages greater than 69, we subtract the total number of people with ages from 30 to 69 from the total number of people (200): 200 - 180 = 20 people.

Therefore, the number of people with ages from 30 to 69 is 180 - 20 = 160 greater than the total number of people with ages less than 30 and people with ages greater than 69.

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