To convert a fraction to a percentage, we need to multiply the fraction by 100. So, to find the percentage of 15/10, we can multiply it by 100.

15/10 * 100 = 150/10

Now, we can simplify this fraction by dividing both the numerator and denominator by 10.

150/10 = 15

Therefore, 15/10 as a percentage is 150%.

To understand this concept better, we can think of a percentage as a way of expressing a fraction out of 100. So, 150% means 150 out of 100, which is the same as 15/10.