Lynn left home at 11.10 a.m. and drove towards the countryside. 2 hours later, her auntie left their home and drove towards the same countryside at 88 km/h. When the auntie reached the countryside at 6.10 p.m., Lynn had another 6 km to travel. What was Lynn’s average speed? Express your answer in mixed number.
Time that the Lynn's auntie started driving = 1.10 p.m.
Duration that Lynn's auntie drove from 1.10 p.m. to 6.10 p.m. = 5 h

Distance that Lynn's auntie travelled
= 5 x 88
= 440 km

Distance that Lynn travelled by the time her auntie reached the city
= 440 - 6
= 434 km

Time that Lynn took to travel 434 km = 7 h

Lynn's average speed
= 434 ÷ 7
= 62 km/h

Answer(s): 62 km/h