Jaslyn left home at 10.20 a.m. and drove towards the town. 3 hours later, her mother left their home and drove towards the same town at 98 km/h. When the mother reached the town at 6.20 p.m., Jaslyn had another 2 km to travel. What was Jaslyn’s average speed? Express your answer in mixed number.
Time that the Jaslyn's mother started driving = 1.20 p.m.
Duration that Jaslyn's mother drove from 1.20 p.m. to 6.20 p.m. = 5 h

Distance that Jaslyn's mother travelled
= 5 x 98
= 490 km

Distance that Jaslyn travelled by the time her mother reached the city
= 490 - 2
= 488 km

Time that Jaslyn took to travel 488 km = 8 h

Jaslyn's average speed
= 488 ÷ 8
= 61 km/h

Answer(s): 61 km/h