For items 13-14, refer to the information below.
In a class, the ratio of the boys to the girls is 6: 4.
There are 36 boys in the class.
13. How many girls are there in the class?
A. 14
B. 25
C.24
D. 25
14. How many students are there in the class?
A. 45
B.50
C. 55
D. 60​