Final answer:
The ratio of trumpets to trombones in the jazz band is 5:3, after simplifying the original ratio of 15:9 by dividing both numbers by 3.
Step-by-step explanation:
The question asks to find the ratio of trumpets to trombones in a jazz band at Marcos School. The ratio can be found by dividing the number of trumpets by the number of trombones. In this case, there are 15 trumpets and 9 trombones. So, the ratio is 15:9, which can be simplified by dividing both sides by the common factor of 3. Therefore, the simplified ratio of trumpets to trombones is 5:3.so the ratio is 15:9. This can be simplified to 5:3 by dividing both numbers by their greatest common factor, which is 3. Therefore, the ratio of trumpets to trombones is 5:3.