How do you find y? thx in advance.

Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

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