With this information, you can calculate the quantity of leagues 15 miles is equal to.

¿What is the inverse calculation between 1 league and 15 miles?

Performing the inverse calculation of the relationship between units, we obtain that 1 league is 0.2 times 15 miles.

Which is the same to say that 15 miles is 5 leagues.

Fifteen miles equals to five leagues. *Approximation

A league is zero times fifteen miles. *Approximation