Kylie left home at 10.30 a.m. and drove towards the seaside resort. 3 hours later, her younger brother left their home and drove towards the same seaside resort at 95 km/h. When the younger brother reached the seaside resort at 6.30 p.m., Kylie had another 5 km to travel. What was Kylie’s average speed? Express your answer in mixed number.
Time that the Kylie's younger brother started driving = 1.30 p.m.
Duration that Kylie's younger brother drove from 1.30 p.m. to 6.30 p.m. = 5 h

Distance that Kylie's younger brother travelled
= 5 x 95
= 475 km

Distance that Kylie travelled by the time her younger brother reached the city
= 475 - 5
= 470 km

Time that Kylie took to travel 470 km = 8 h

Kylie's average speed
= 470 ÷ 8
= 58³₄ km/h

Answer(s): 58³₄ km/h