A speed skating track has a perimeter of 400m. Determine the straightaway length of the track.

* the width of the track is 50m*

Please help . Thank you for your time

2 answers

by width, I assume you mean the distance between the parallel straight sides. If so, then the track consists of two straightaways of length L, and a complete circle of diameter 50. So,
2L + 50π = 400
2L+2W = 400.
2L + 2*50 = 400
L =