The total number of restaurant - purchased meals that the average person will eat in a restaurant , in a car , or at home in a year is 168. The total number of these meals eaten in a car or at home exceeds the number eaten in a restaurant by 10. Twenty more restaurant - purchased meals will be eaten in a restaurant than at home . Find the number of restaurant - purchased meals eaten in a restaurant , the number eaten in a car , and the number eaten at home