One way to ensure that the race ends up in a tie is to have the person who lost the original race run a shorter distance before turning around. Instead of 80.0 m, what should that distance be

The appropriate answer is "72.8 m".

Explanation:

Let the distance be "x".

As per the question, we get

⇒

or,

⇒

By taking L.C.M, we get

⇒

By applying cross-multiplication, we get

⇒

⇒    

⇒        

an obstruction

15.3 cos 65 degrees trig