A jazz concert brought in $155,500 on the sale of 7,500 tickets. If the tickets sold for $15 and $25 each,...

A jazz concert brought in $155,500 on the sale of 7,500 tickets. If the tickets sold for $15 and $25 each, how many of each type of ticket were sold?
The number of $15 tickets is [ ]
The number of $25 tickets is [ ]