With this information, you can calculate the quantity of hours 9 minutes is equal to.
¿What is the inverse calculation between 1 hour and 9 minutes?
Performing the inverse calculation of the relationship between units, we obtain that 1 hour is 6.6666667 times 9 minutes.
Which is the same to say that 9 minutes is 0.15 hours.
Nine minutes equals to zero hours. *Approximation
A hour is six times nine minutes. *Approximation