Question 274174
training time first


(6 / t) + 9.6 = 22.5 / t


multiplying by t ___ 6 + 9.6 t = 22.5 ___ 9.6 t = 16.5 ___ t = 16.5 / 9.6 = 5.5 / 3.2


running speed = 6 / (5.5 / 3.2) = 19.2 / 5.5


biking speed = 22.5 / (5.5 / 3.2) = 144 / 11


D-run time = 10 / (19.2 / 5.5) = (55 / 19.2) 60 = 171.875 min = 2:51:37.5 (2 hr 51 min 37.5 sec)


D-bike time = 20 / (144 / 11) = (220 / 144) 60 = 91 2/3 min = 1:31:40 (1 hr 31 min 40 sec)


duathlon time ___ 4:23:17.5