It took who won exactly 35 minutes by car to get to his grandmother's the nearest parking area is a four minute walk from her apartment one week he realized he spent 5 hours and 12 minutes traveling to her apartment then back home how many round trips did he make to visit his grandmother

Answer 1

(5*60) = 300

(300 + 12)/(35+9) = ?

Answer 2

I get
(300 + 12)/(2*(35+4))