Answer:
3 rounds of bingo
Explanation:
Let x represent the number of bingo rounds
For adults, the total cost can be represented by 2x + 13, since it is $2 per game and there is a $13 entry fee
For children, the cost can be represented by 3x + 10, since it is $3 per round and there is a $10 entry fee
To find how many rounds are needed to make the cost the same, set these expressions equal to each other and solve for x:
2x + 13 = 3x + 10
13 = x + 10
3 = x
So, costs will be the same with 3 rounds of bingo