Stillwater Junior High divides students into teams taught by a group of teachers. The table shows the number of students in each team.

Team

Number of Students

Acers

78

Blazers

80

Outbacks

83

Quasars

77

Voyagers

82

Total

400

The principal uses a computer to randomly select the name of a student from all the students in the school. With the computer program, it is possible to draw the name of the same student twice. If the principal selects the name of a student from the Acers on the first try, what is the probability she will draw the name of another student from the Acers on the second try?

1 answer

The probability of drawing another student from the Acers on the second try can be calculated as follows:

Number of students in the Acers team = 78
Total number of students in the school = 400

After the first draw, there are now 77 students left in the Acers team and 399 students left in the school.

Therefore, the probability of drawing another student from the Acers on the second try is 77/399 ≈ 0.193

So, the probability is approximately 0.193 or 19.3%