Answer:
The ratio is 1:35 and the equivalent fraction is 2/70.
Explanation:
It is given that, there is 1 principal to every 35 teachers.
It means that the ratio of principal to teachers is 1:35.
It can be also written as

For equivalent fraction multiply both numerator and denominator by 2. So,

Hence, the ratio is 1:35 and the equivalent fraction is 2/70.