Final answer:
18 kids own their own instruments and 72 kids rent instruments. The percentage of kids who rent their instruments is 80%.
Step-by-step explanation:
The questions can be answered as -
- To find the number of kids who own their own instruments, we need to calculate 20% of the total number of kids. 20% of 90 is 0.2 * 90 = 18 kids.
- To find the number of kids who rent instruments, we subtract the number of kids who own their own instruments from the total number of kids. 90 - 18 = 72 kids.
- To find the percentage of kids who rent their instruments, we divide the number of kids who rent by the total number of kids and multiply by 100. (72 / 90) * 100 = 80%.