In nowadays cycling better results could be obtained not only due to rider physical preparation but also thanks to using updated technologies. One of the most important part of rider´s equipment is his or her helmet.
While most bikers wear a helmet mainly to protect themselves, racers use modern technologies which can improve certain features like aerodynamics and in this way enable them to reach a better time in a race. It´s quite important especially during the special parts of the race called time trial.

Providing the helmet thanks to its advanced shape can increase racer´s performance of a half percent. HOW MUCH can the racer shorten his time in a 40-minute time trial?


t =  12 s


Solution in text t =

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