Caleb is planning a visit to an amusement park. He wants to figure out how many roller coasters he could ride and how many shows he can watch in 345 minutes.

Each roller coaster takes 5 minutes to ride. He estimates that the average wait time for a roller coaster is 30 minutes.

Caleb wants to ride 3 more roller coasters than the number of shows he watches. Each show takes 25 minutes.

In 345 minutes, he can ride ?
roller coasters and watch ?
shows.