Irene left home at 11.45 a.m. and drove towards the province. 2 hours later, her auntie left their home and drove towards the same province at 95 km/h. When the auntie reached the province at 4.45 p.m., Irene had another 2 km to travel. What was Irene’s average speed? Express your answer in mixed number.
Time that the Irene's auntie started driving = 1.45 p.m.
Duration that Irene's auntie drove from 1.45 p.m. to 4.45 p.m. = 3 h

Distance that Irene's auntie travelled
= 3 x 95
= 285 km

Distance that Irene travelled by the time her auntie reached the city
= 285 - 2
= 283 km

Time that Irene took to travel 283 km = 5 h

Irene's average speed
= 283 ÷ 5
= 56³₅ km/h

Answer(s): 56³₅ km/h