Answer:
In the first hour they sold 350 tickets and in the second hour they sold 20% more so first we have to find 20% of 350, 20/100 x 350 = 70, so 20% of 350 is 70 now in the second they sold 350 + 70 = 420 tickets now you have to add it so 350 + 420 = 770, there is a price of $17.50 per ticket so 770 x 17.50 = 13475.
Explanation: