A certain ironman triathlon consists of a 2.4 mile swim, followed by a 112 mile bike ride, and ends with a 26 mile run

ironman-triathlon

#1

A certain ironman triathlon consists of a 2.4 mile swim, followed by a 112 mile bike ride, and ends with a 26 mile run.
A contestant in this competition swims at a rate of 1.2 mi./hr. Bikes at a rate of 14 mi./hr, and runs at a pace of 4 mi./hr.
Let t be the number of hours since the contestant started the raxe, and let s=s (t) be the total distance covered at time t. Assume no time is lost in transition from one event to another.

Answer:

seems like question doesnot need to be answered anymore :\