After reading the problem two times, an attentive reader will see momentarily that the difference in the bought tickets is 2 child tickets, while the difference in the cost is 54-48 = 6 dollars. Hence, one child ticket price is 6/2 = 3 dollars. ANSWER Then 5 senior tickets cost 48-6*3 = 30 dollars; hence, one senior ticket price is 30/6 = 5 dollars. ANSWER