Answer: There were 50 tickets of $5 that were bought.
Step-by-step explanation: Given that a sport's fan spent a total of $450 on baseball tickets and only $4 and $5 tickets were bought. Also, there was an equal number at each price.
We are to find the number of $5 tickets bought.
Let n be the number of $4 and $5 tickets that were bought.
Then, according to the given information, we have
Thus, there were 50 tickets of $5 that were bought.