Question

In Professor Shannon's economics class there are 12 male students. Females represent 60% of the class total. How many students does Professor Shannon have in his economics class? None of these. 33. 7. 30. 17.

Answer 1

40% of 30 is 12, so 30.....?  

Answer 2

30 students.

Explanation:

In Professor Shannon's economics class the number of male students = 12

Females represent 60% of the class total.

Let the total number of students in the class be 'x'

Females are 60%, so male students are 40%.

Therefore, the expression would be

40% of x = 12

0.4x = 12

x =
`(12)/(0.4)`

x = 30

Total number of students are 30 in his economics class.