Jade left home at 11.15 a.m. and drove towards the suburb. 2 hours later, her father left their home and drove towards the same suburb at 95 km/h. When the father reached the suburb at 4.15 p.m., Jade had another 3 km to travel. What was Jade’s average speed? Express your answer in mixed number.
Time that the Jade's father started driving = 1.15 p.m.
Duration that Jade's father drove from 1.15 p.m. to 4.15 p.m. = 3 h

Distance that Jade's father travelled
= 3 x 95
= 285 km

Distance that Jade travelled by the time her father reached the city
= 285 - 3
= 282 km

Time that Jade took to travel 282 km = 5 h

Jade's average speed
= 282 ÷ 5
= 56²₅ km/h

Answer(s): 56²₅ km/h