Answer:
5 cups
Explanation:
To find the total amount of yogurt Mark used, we need to add the amount of vanilla yogurt and the amount of strawberry yogurt.
- Vanilla yogurt: 2 2/4 cups = 10/4 cups
- Strawberry yogurt: 2 1/2 cups = 5/2 cups
Total yogurt: 10/4 cups + 5/2 cups
= (10+ 5 ×2)/4 cups
= (10+10)/4 cups
= 20/4 cups
= 5 cups
Therefore, Mark used 5 cups of yogurt in the smoothie.