Question

In a class of 30 students, 70% have brown eyes. and the remaining have black eyes. How many number of students have black eyes?

Answer 1

9 students have black eyes.

Explanation:

To solve this you need to know what 70% of 30 is and since 70% of 30 is 21, all you need to do now is subtract 30 by 21 so you should get 9 as your result.

I hope this helps you :D

Answer 2

9 students have black eyes