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

Distance that Linda's younger brother travelled
= 3 x 95
= 285 km

Distance that Linda travelled by the time her younger brother reached the city
= 285 - 3
= 282 km

Time that Linda took to travel 282 km = 5 h

Linda's average speed
= 282 ÷ 5
= 56²₅ km/h

Answer(s): 56²₅ km/h