Fanny left home at 11.55 a.m. and drove towards the suburb. 2 hours later, her grandfather left their home and drove towards the same suburb at 93 km/h. When the grandfather reached the suburb at 6.55 p.m., Fanny had another 3 km to travel. What was Fanny’s average speed? Express your answer in mixed number.
Time that the Fanny's grandfather started driving = 1.55 p.m.
Duration that Fanny's grandfather drove from 1.55 p.m. to 6.55 p.m. = 5 h

Distance that Fanny's grandfather travelled
= 5 x 93
= 465 km

Distance that Fanny travelled by the time her grandfather reached the city
= 465 - 3
= 462 km

Time that Fanny took to travel 462 km = 7 h

Fanny's average speed
= 462 ÷ 7
= 66 km/h

Answer(s): 66 km/h