College

A school has 764 students. Of these students, 118 are in third grade. Which equation can be used to find [tex]s[/tex], the total number of students in all of the other grades?

A. [tex]s - 764 = 118[/tex]

B. [tex]s - 118 = 764[/tex]

C. [tex]764 + 118 = s[/tex]

D. [tex]118 + s = 764[/tex]

Answer :

Let $s$ be the number of students in all the grades other than third grade. The total number of students in the school is the sum of the third grade students and the students in the other grades. This relationship can be written as:

$$
118 + s = 764.
$$

This equation shows that if you add the 118 third grade students to the $s$ students in the other grades, you get the total of 764 students.

Thus, the correct equation is:

$$
118 + s = 764.
$$

So, the correct option is the fourth one.

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