Sabrina left home at 10.35 a.m. and drove towards the campsite. 3 hours later, her father left their home and drove towards the same campsite at 96 km/h. When the father reached the campsite at 6.35 p.m., Sabrina had another 6 km to travel. What was Sabrina’s average speed? Express your answer in mixed number.
Time that the Sabrina's father started driving = 1.35 p.m.
Duration that Sabrina's father drove from 1.35 p.m. to 6.35 p.m. = 5 h

Distance that Sabrina's father travelled
= 5 x 96
= 480 km

Distance that Sabrina travelled by the time her father reached the city
= 480 - 6
= 474 km

Time that Sabrina took to travel 474 km = 8 h

Sabrina's average speed
= 474 ÷ 8
= 59¹₄ km/h

Answer(s): 59¹₄ km/h