determine the number of people who participated in weight - training (w) and cardio (c).

determine the number of people who participated in weight - training (w) and cardio (c).
Answer
Explanation:
Step1: Understand the Venn - diagram concept
In a Venn - diagram for two sets (W) (weight - training) and (C) (cardio), the intersection part represents the number of people who participated in both activities.
Step2: Identify the intersection value
Looking at the Venn - diagram, the number in the overlapping (intersection) region is (25).
Answer:
(25)