Question

the number of books in a class library is 17 more than 3 times the number of students in the class. If 5 students are absent, each student can borrow exactly four books from the library. Find the number of students in the class.

Answer 1

37 students.

Explanation:

Let n = number of books,

Let s = number of students

Thus, we get the following expressions:

`n=3s+17`

`4 = (n)/(s-5)`

Solving this system via substitution, we get that the number of students is 37.