The approximate average is 19. The actual average is 19 and 1/3
19 19
20.085 is the average.
15.5 is the average.
The average is 18.
The average is 19.
The average is 19.
The average is 13.
The average is 18.
Average = 20
The average is 15.
19 + 24 + 20 = 63/3 = 21 The average of the three numbers is 21.