Question

The two-way table shows the number of people ages 20 and 50 who belong to Group A or B.

What percent of people 50 years old belong to Group A? Express your answer to the nearest whole percent.



%



Age 20 Age 50
Group A 19 32
Group B 40 24

Answer 1

If what you mean by the "percent of people 50 years old belong to group A" is the percentage of 50-year old people with respect to the total number of people belonging to group A, then the answer is

32/(19+32) * 100 = 63%

But, if what you mean is the percentage of 50-year old people in group A with respect to the total number of 50-year old people, then the answer will be

32/(32+24) * 100 = 57%