Winnie left home at 11.35 a.m. and drove towards the seaside resort. 3 hours later, her father left their home and drove towards the same seaside resort at 94 km/h. When the father reached the seaside resort at 7.35 p.m., Winnie had another 4 km to travel. What was Winnie’s average speed? Express your answer in mixed number.
Time that the Winnie's father started driving = 2.35 p.m.
Duration that Winnie's father drove from 2.35 p.m. to 7.35 p.m. = 5 h

Distance that Winnie's father travelled
= 5 x 94
= 470 km

Distance that Winnie travelled by the time her father reached the city
= 470 - 4
= 466 km

Time that Winnie took to travel 466 km = 8 h

Winnie's average speed
= 466 ÷ 8
= 58¹₄ km/h

Answer(s): 58¹₄ km/h