Question

What is

`(3)/(5)`
of 15
​

Answer 1

9

Explanation:

3/5 * 15

Rewriting as

3 * 15/5

3 * 3

9

Answer 2

The word "of" tells us we need to multiply.

So 3/5 of 15 means the same thing as (3/5) · (15).

Think of the 15 as 15/1 so when multiplying,

we can cross-cancel the 5 and 15 to 1 and 3.

So we have (3/1) · (3/1) which is 9/1 or just 9.