In mark's class, there are 15 students with brown hair, 3 students with blonde hair, and 5 students with black hair. what is the ratio of students with brown hair to students with black hair?

3 : 1

Step-by-step explanation:

We know that the ratio of A to B is given by :-

or A : B .

Given : Number of students having brown hair = 15

Number of students having black hair = 5

Then , the ratio of students with brown hair to students with black hair will be  :-

Hence, the ratio of students with brown hair to students with black hair = 3 : 1.

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"