A group of 1280 individuals, consisting of teachers and students, is attending a conference. For every 15 students, there is one teacher. How many teachers are in the group?
- A85
- B70
- C75
- D80
Solution & Step-by-step Explanation
Let the number of teachers be .
Since there is 1 teacher for every 15 students, the number of students is .
Total number of individuals:
Thus, there are 80 teachers in the group.
Since there is 1 teacher for every 15 students, the number of students is .
Total number of individuals:
Thus, there are 80 teachers in the group.