Write each mixed number as a percent 9 3/4 4/15 7 3/10

At least two people have the same birthday in a school of 150 students

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.

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?