Question

The swimming instructor has a list of 152 students who have signed up for swimming lessons. The swimming instructor can register 12 students in each class. What is the least number of classes needed for all the students to be registered in a class?

1. 12
2. 13
3. 14
4 .15

Answer 1

2. 13

Explanation:

152 / 12 = 12 2/3

So you have 12 groups with the maximum of 12 students per class. Then there are still (152 - 144) = 8 students left... Obviously these 8 need to be placed in a class also.

The last class does not contain the maximum students (but just 8 I stead of 12), but it is counted as a class just the same.

The least number of classes is 13, which is answer 2.

Answer 2

13 classes

Explanation:

152 divided by 12 is 12.6666666667 so the remaining number of stundents would not be in a class.

But, we can make a class for that remaining students.

So the answer is 13.

I hope this helped ;)