12, 13, 15, 17, 17, 20 are the numbers in order
The median (middle number) would be 15 and 17
If there are 2 medians, you need to add both of them and divide by 2
15 + 17 = 32
32/2 = 16
So the median is 16
Answer:
We need to add 8 more red counters
Step-by-step explanation:

It would be 20% of hours is spent walking.