1. **State the problem:** Tony needs to watch the class for 12 minutes and Jan needs to watch the class for 8 minutes. The class needs to be watched for 20 minutes each day. We want to find how they can combine their time to cover the 20 minutes. 2. **Understand the total time needed:** The total time required is 20 minutes. 3. **Sum their available times:** Tony can watch for 12 minutes and Jan can watch for 8 minutes. 4. **Add their times:** $$12 + 8 = 20$$ 5. **Conclusion:** Since their combined time equals the required 20 minutes, Tony and Jan can split the watching time by Tony watching for 12 minutes and Jan watching for 8 minutes to cover the entire 20 minutes. **Final answer:** They can combine their time by Tony watching 12 minutes and Jan watching 8 minutes to cover the 20 minutes needed.