Step-by-step explanation
From the statement, we know that:
• the total number of students increased by 12% this year compared to the total number of students last school year,
• S is the total number of students this school year.
We define as L the number f tstudents of last year.
If L increased by 12%, the number of students this school year is:
Dividing both sides by 1.12, we get the number of students the last school year was:
Answer
C. S ÷ 1.12