Answer:
1. 60.50(0.20)
2. 34(0.15) <How much the coupon takes off
3. 157.30(0.10) <How much the coupon takes off
4. 10.49/58.25 <The percentage of the tip
5. 94.20(0.20) <The percentage of the tip
94.20(0.15) <How much the coupon takes off of the price of the meal.
Hope I helped!