Band students are tested on, and required to pass, a certain number of scales during the year. As of today, Isaac has passed 9 scales, whereas his friend Audrey has passed 14 of them. Going forward, Isaac has committed to passing 3 scales per week, and Audrey has committed to passing 2 per week. At some point soon, the two friends will have passed the same number of scales. How long will that take? How many scales will that be?
In _ weeks, the friends will each have passed _ scales.