Question

A cycle race began at 9:40
Henri finished at 11:16 exactly and his average speed was 30 km/h.

(A) calculate the length of his race in km.

Answer 1

The entire race took Henry 1hr:36min which is 96min. He has an average speed of 30km/hr means he's been traveling 0.5km/min
30km/hr > 30km/1hr >
30km/60min = 0.5km/min
since Henry took 96min to finish the race we multiply 0.5km/min with 96
0.5km/min*96min=48km

Answer 2

(11+16/60-9-40/60 hr)(30km/hr)=48km