Answer:
2 1/4 hours or 2.25 hours or 9/4 hours. This depends on your choices.
Explanation:
Exercises
30 minutes = 1/2 hour
3* 1/2 = 3/2 hours
Yoga
45 minutes = 45 minutes / 60 minutes//hour = 3/4 hour
Total
3/2 + 3/4 = 6/4 + 3/4 = 9/4
9/4 = 2 1/4 hours.