The table shows the number of students in a class who have allergies and/or have asthma:

Question

Have Allergies Do Not Have Allergies Total
Have Asthma 56 15 71
Do Not Have Asthma 40 ? 46
Total 96 21 117
What is the missing number in the table? (4 points)

5
6
16
50

Answer 1

Using the totals provided, we can fill out the missing value by subtracting the known values from the total:

Have Allergies but Do Not Have Asthma = Total with allergies - Have asthma = 96 - 71 = 25
Do Not Have Allergies and Do Not Have Asthma = Total without allergies - Have allergies = 21 - 15 = 6

Therefore, the missing number in the table is 6.