Acar was moving 110 km/h how long did it take to go 25.5 miles?

Which ratio is equivalent to 10: 85

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

With #! i’ve tried to figure it out but i can’t.