Lynn left home at 11.40 a.m. and drove towards the province. 2 hours later, her cousin left their home and drove towards the same province at 94 km/h. When the cousin reached the province at 4.40 p.m., Lynn had another 4 km to travel. What was Lynn’s average speed? Express your answer in mixed number.
Time that the Lynn's cousin started driving = 1.40 p.m.
Duration that Lynn's cousin drove from 1.40 p.m. to 4.40 p.m. = 3 h

Distance that Lynn's cousin travelled
= 3 x 94
= 282 km

Distance that Lynn travelled by the time her cousin reached the city
= 282 - 4
= 278 km

Time that Lynn took to travel 278 km = 5 h

Lynn's average speed
= 278 ÷ 5
= 55³₅ km/h

Answer(s): 55³₅ km/h