Answer:
plant grew, on average, 23/65 inches per day
Step-by-step explanation:
average = total growth / total # days
avg = (1 1/2 + 4/5) ÷ 6 1/2
change mixed number to improper fractions:
avg = (3/2 + 4/5) ÷ 13/2
create equivalent fractions using a common denominator of 10:
avg = (15/10 + 8/10) ÷ 65/10
avg = 23/10 ÷ 65/10
avg = 23/10 x 10/65
avg = 23/65
plant grew, on average, 23/65 inches per day
