In 2014, there were 22 million Americans

diagnosed with diabetes. This number of cases repre-

sents an increase of 300% over the number of cases

in 1980. How many cases of diabetes were there in

1980?

5.5 millions

Step-by-step explanation:

If the price is increased by 300% lets say the starting price was 100$, then it becomes 400$, So to get the starting price You have to divide it by 4 not 3. In this case People who got diabetes are 22/4=5.5 million people

A 300% increase means that there are 3 times as many as the original number. Therefore, there were 3 times as many cases in 2014 as there were in 1980.

To figure out how many cases there were in 1980, simply divide 22 million by 3 to get approximately 7.3 million cases in 1980.