MathDB

A triathlete competes in a triathlon in which the swimming, biking, and running segments are all of the same length. The triathlete swims at a rate of

3

kilometers per hour, bikes at a rate of

20

kilometers per hour, and runs at a rate of

10

kilometers per hour. Which of the following is closest to the triathlete's average speed, in kilometers per hour, for the entire race?

<span class='latex-bold'>(A)</span>\ 3 \qquad <span class='latex-bold'>(B)</span>\ 4 \qquad <span class='latex-bold'>(C)</span>\ 5 \qquad <span class='latex-bold'>(D)</span>\ 6 \qquad <span class='latex-bold'>(E)</span>\ 7

6

Problems(2)