These questions just take some trial and error. Try a bunch of things. After about 2 minutes I came up with
(16 + 5) / (2 - 1 + 6)
You can check this by simplifying everything inside the brackets.
21 / 7
= 3
Lower quartile (xL): 68
Upper quartile (xU): 88
Interquartile range (xU-xL): 20
Answer:
try D
Step-by-step explanation:
