Pamela left home at 11.45 a.m. and drove towards the countryside. 3 hours later, her auntie left their home and drove towards the same countryside at 93 km/h. When the auntie reached the countryside at 7.45 p.m., Pamela had another 3 km to travel. What was Pamela’s average speed? Express your answer in mixed number.
Time that the Pamela's auntie started driving = 2.45 p.m.
Duration that Pamela's auntie drove from 2.45 p.m. to 7.45 p.m. = 5 h

Distance that Pamela's auntie travelled
= 5 x 93
= 465 km

Distance that Pamela travelled by the time her auntie reached the city
= 465 - 3
= 462 km

Time that Pamela took to travel 462 km = 8 h

Pamela's average speed
= 462 ÷ 8
= 57³₄ km/h

Answer(s): 57³₄ km/h