15 is 30 of what number?

A fraction can be a portion or section of any quantity out of a whole.

Answer: 15 is 1/2 of 30

Let's find the required number

Explanation:

Divide 15 by 30 to find the required part of the number.

Therefore, 15/30 = 1/2

So, 15 is half of 30. 

Thus, 15 is 1/2 of 30