Answer:
a) Acetaminophen is used 5 times as often as ibuprofen.
b) The ratio is : 1/5
Step-by-step explanation:
The percentages shown in the pie-chart on how many times a medication is used are:
Ibuprofen: 9%
Acetaminophen: 45%
Aspirin: 46%
Question a) reads: How many times as often was acetaminophen used as ibuprofen?
So we compare: Acetaminophen / Ibuprofen = 45% / 9% = 5
Acetaminophen is used 5 times as often as ibuprofen.
Question b) reads; What is the ratio of ibuprofen used to acetaminophen used?
So now the ratio is inverted, and we do: ibuprofen / acetaminophen = 9% / 45% = 1/5
