Xylia left home at 10.35 a.m. and drove towards the campsite. 3 hours later, her uncle left their home and drove towards the same campsite at 92 km/h. When the uncle reached the campsite at 6.35 p.m., Xylia had another 6 km to travel. What was Xylia’s average speed? Express your answer in mixed number.
Time that the Xylia's uncle started driving = 1.35 p.m.
Duration that Xylia's uncle drove from 1.35 p.m. to 6.35 p.m. = 5 h

Distance that Xylia's uncle travelled
= 5 x 92
= 460 km

Distance that Xylia travelled by the time her uncle reached the city
= 460 - 6
= 454 km

Time that Xylia took to travel 454 km = 8 h

Xylia's average speed
= 454 ÷ 8
= 56³₄ km/h

Answer(s): 56³₄ km/h