Answer:
Dante should sell 25 tickets in order to recover all  money he paid.
Step-by-step explanation:
Let us assume Dante has to sell m tickets to recover all the money he pays.
Now, the amount paid to local firehouse  = $125
The per person insurance costs  = $ 3
So, the insurance of M guests cost = M x ( The cost of insurance per person)
                             = M x ( $3)  = 3M
So, the cost of  insurance of M guest = 3 M .... (1)
Also, The per person ticket costs  = $ 8
So, the cost of M guests tickets = M x ( The cost  per person)
                            = M x ( $8)  = 8 M
So, the cost of tickets of M guest = 8 M .... (2)
Now, the total cost paid by Dante in organizing
= Amount paid to FIRE house + total Insurance cost of M people
= $125 + 3 M
And, the amount he receives after selling M tickets = 8 M
Now, for M tickets: The amount Spend  = Amount Earned
⇒ 125 + 3 M  = 8 M
or, 125 Â = 5 M
or, M = 125/5  = 25  ⇒M = 25
Hence, Dante should sell 25 tickets in order to recover all the money he has to pay.