Answer:
20, 22 and 23 are the first quartile. 25, 29 and 35 are the second quartile. 37, 41 and 46 are the third quartile. 54, 56 and 60 are the fourth quartile.
Explanation:
Quartiles are the values that divide a list of numbers into quarters. There are twelve numbers so when divided by 4 you get three numbers for each quartile.