Question 1196143
 Lina walks to school from 4:30 AM to 5:45 AM.
5:45 - 4:30 = 1 hr 15 min or 1.25 hrs (15/60)
:
Her house if 1.2 km from your school. Calculate how fast Lina walked to school. 
speed = dist/time
s = 1.2/1.25
s = .96 km/hr