Linda has $10, rick has & 12, they both put there money together to buy a pizza that cost $14, they buy it, then someone gives them $18, how much money does linda and rick have all together. 15 points and explain how you got the answer.

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip