Question

Tim asked 128 people whether or not they eat a healthy diet and whether they get regular exercise. The result of Tim's survey are shown in the Venn diagram below. One number is missing from the diagram.

Answer 1

In the Venn diagram, the missing number can be found by subtracting the total number of people who eat a healthy diet and the total number of people who get regular exercise from the total number of people surveyed.

Step-by-step explanation:

In the Venn diagram, we can see that there are 30 people who eat a healthy diet, 45 people who get regular exercise, and 18 people who do both. To find the missing number, we need to subtract the total number of people who eat a healthy diet (30) and the total number of people who get regular exercise (45) from the total number of people surveyed (128). So the missing number is 128 - 30 - 45 = 53.