Arun took part in a triathlon an athletic event .He had to swim run and bicycle to 10 km ,24 km and 30 km respectively and return the same way Arun's average speed for the triathelon is 4 km/h He took a total of 4 min for swimming and 20 min for bicycling in the triathelon.How much time he took while returning for the bicycle if the time taken for the return of each phase (i.e,each event)is 50% greater than that of taken initially:

Options

A. 12 min
B. 11 min
C. `11(1)/(9)` min
D. none of these

Answer

B