Question

In a school of 2000 students, the ratio of teachers to students is 3:80. Some teachers join the school and the ratio changes to 1:20. Find the number of teachers who joined the school.

Answer 1

Answer:

new teachers = 25

Step-by-step explanation:

To find teachers:

3:80=x:2000

so,

x=75

Now after adding new teachers the ratio becomes 1:20. So, to find total teachers:

1:20=x:2000

so,

x=100

to the new teachers who joined the teachers will be 25.