The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: the average of first 5 multiples of 5 is
[EX A]: 1

[EX Q]: Problem: the sum of ages of 5 children born 1 years different each is 30 years . what is the age of the elder child ?
[EX A]: 8

[EX Q]: Problem: for a certain art exhibit , a museum sold admission tickets to a group of 50 people every 5 minutes from 9 : 00 in the morning to 5 : 55 in the afternoon , inclusive . the price of a regular admission ticket was $ 10 and the price of a student ticket was $ 6 . if on one day 3 times as many regular admission tickets were sold as student tickets , what was the total revenue from ticket sales that day ?
[EX A]:
$ 4860