Question

dr fjeldsted had 91 students in his first quarter calcus class. if the ration of math majors to non math majors if 4to 9 how many math majors are in the class?

Answer 1

The are 28 math majors in the class.

Explanation:

We can solve this question using a rule of three.

The ratio of math majors to non math majors is 4 to 9

This means that 4+9 = 13 students, 4 are math majors.

The class has 91 students. How many are math majors?

13 students - 4 math majors

91 students - x math majors

`13x = 4*91`

`x = (4*91)/(13)`

`x = 28`

The are 28 math majors in the class.