Answer:
The minimum number of teachers needed is 6
Explanation:
To find minimum number of teachers we have to divide 100 and 15 so the answer is 6.666.....but if we
multiply 6 and 15 we get 90 , so it means that 6 teachers can only provide for 90 students , unfortunately there are 100
students , so we need 1 more teacher for the rest ten students that's why the answer came in decimal point . so the answer could be 6.66 or 7 .