Hello from MrBillDoesMath!
Answer: 1/3 (or 33 1/3 %) and 42 teachers
Discussion:
Part 1. If 16 out of 24 students made at least 80%, then 24 - 16 or 8 students made less than 80%.
Students who scored less than 80% / total number of students =
8/24 = 1/3
Part 2.
3 teachers for every 57 students so
3/57 = t/798 where t is the number of teachers
Multiply both sides by 798:
3/57 * 798 = t =>
3/57 * (14 * 57) = t as 798 = 14 * 57 so cancelling the 57's.
3* 14 =t
or t = 42
Thank you,
MrB
