Fiona left home at 10.30 a.m. and drove towards the town. 3 hours later, her father left their home and drove towards the same town at 88 km/h. When the father reached the town at 5.30 p.m., Fiona had another 2 km to travel. What was Fiona’s average speed? Express your answer in mixed number.
Time that the Fiona's father started driving = 1.30 p.m.
Duration that Fiona's father drove from 1.30 p.m. to 5.30 p.m. = 4 h

Distance that Fiona's father travelled
= 4 x 88
= 352 km

Distance that Fiona travelled by the time her father reached the city
= 352 - 2
= 350 km

Time that Fiona took to travel 350 km = 7 h

Fiona's average speed
= 350 ÷ 7
= 50 km/h

Answer(s): 50 km/h