Answer:
5.66 cents was the average price rise in 2 decades.
Step-by-step explanation:
In the 1960s, average price of an ear of corn was = 4.17 cents
In the 1980s, average price went up to 9.83 cents
Average price rise = [tex]\frac{\text{Change in price}}{\text{number of years}}[/tex]
Average price rise = [tex]\frac{9.83-4.17}{20}=\frac{5.66}{20}[/tex]
= 5.66 cents in two decades
Therefore, average price rise in 2 decades was 5.66 cents.
