x adult tickets, and (525-x) children's tickets. Write the total money (revenue) equation 2.50x + 1.50(525-x) = 987.50 dollars. From the equation x == 200. ANSWER. 200 adult tickets and 525-200 = 325 children tickets. CHECK. 2.50*200 + 1.50*325 = 987.50 dollars, in total. ! Correct !