Hazel left home at 11.55 a.m. and drove towards the campsite. 2 hours later, her cousin left their home and drove towards the same campsite at 96 km/h. When the cousin reached the campsite at 4.55 p.m., Hazel had another 3 km to travel. What was Hazel’s average speed? Express your answer in mixed number.
Time that the Hazel's cousin started driving = 1.55 p.m.
Duration that Hazel's cousin drove from 1.55 p.m. to 4.55 p.m. = 3 h

Distance that Hazel's cousin travelled
= 3 x 96
= 288 km

Distance that Hazel travelled by the time her cousin reached the city
= 288 - 3
= 285 km

Time that Hazel took to travel 285 km = 5 h

Hazel's average speed
= 285 ÷ 5
= 57 km/h

Answer(s): 57 km/h