Sabrina left home at 11.25 a.m. and drove towards the town. 2 hours later, her grandfather left their home and drove towards the same town at 95 km/h. When the grandfather reached the town at 5.25 p.m., Sabrina had another 5 km to travel. What was Sabrina’s average speed? Express your answer in mixed number.
Time that the Sabrina's grandfather started driving = 1.25 p.m.
Duration that Sabrina's grandfather drove from 1.25 p.m. to 5.25 p.m. = 4 h

Distance that Sabrina's grandfather travelled
= 4 x 95
= 380 km

Distance that Sabrina travelled by the time her grandfather reached the city
= 380 - 5
= 375 km

Time that Sabrina took to travel 375 km = 6 h

Sabrina's average speed
= 375 ÷ 6
= 62¹₂ km/h

Answer(s): 62¹₂ km/h