There are 25 teachers at Mafika Secondary School. Out of these, 12 are female, and the rest are male teachers. By what percentage do male teachers exceed female teachers?

There are 25 - 12 = 13 male teachers at Mafika Secondary School.
To find the percentage by which male teachers exceed female teachers, we first need to find the difference in the number of male and female teachers:
13 - 12 = 1

Then, we calculate the percentage by dividing the difference by the total number of female teachers and multiplying by 100:
(1/12) * 100 = 8.33%

Therefore, male teachers exceed female teachers by 8.33%.

Step 1: Find the number of male teachers.

Male teachers = Total teachers - Female teachers
= 25 - 12
= 13

Step 2: Calculate the percentage by which male teachers exceed female teachers.

Percentage = (Male teachers / Female teachers) - 100
= (13 / 12) - 100
= 1.083 - 100
= 108.3%

Therefore, male teachers exceed female teachers by 108.3%.