The rational number that is equals 15 is 15/1
What is rational number?
Any number that can be written as the fraction or quotient of two integers with a non-zero denominator is considered rational. Put differently, the representation of a rational number is p/q.
15/1 is the simplest rational number that equals 15. The rationality of 15 stems from the fact that it is an integer. Any number that can be written as the ratio of two integers with a non-zero denominator is considered rational. Since 1 is not zero in this instance, 15 can be written as the ratio of 15 (the numerator) to 1 (the denominator).
Therefore a rational number is 15/1 .