15/51 as a percentage is 29.41%. This number comes from turning the fraction into a form that’s easy to compare with other values, like scores or discounts.
The fraction 15/51 can be reduced by dividing both the top and bottom by 3, giving 5/17. Even in this simpler form, it still represents the same part of a whole, and when expressed as a percentage it stays at 29.41%. That means if you had 51 equal pieces, 15 of them would make up just under a third of the total.
In everyday situations, you might see this percentage when dealing with grades, interest rates, or survey results. Knowing that 15 out of 51 is about 29.41% helps you quickly gauge how large a portion something is without having to do the math each time.