To determine how many more raffle tickets Paul needs to sell, we can subtract the amount he has already sold from the minimum amount required to earn the team jacket.
Amount Paul needs to sell = Minimum amount required - Amount already sold
Amount Paul needs to sell = $230 - $50
Amount Paul needs to sell = $180
Since each raffle ticket costs $2, we can divide the amount Paul needs to sell by the price of each ticket to find the number of tickets he needs to sell.
Number of tickets Paul needs to sell = Amount Paul needs to sell / Price per ticket
Number of tickets Paul needs to sell = $180 / $2
Number of tickets Paul needs to sell = 90
Therefore, Paul needs to sell 90 more raffle tickets to earn a team jacket.