this is an OER i dont know if u know what this is but I have explain the answer and how I got it :))

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

can you complete your sentence? i could !