A farmer drives to town at 40 km/h, spends 1.5 hours in town and returns home travelling 30 km/h. If he has been away from home a total of 5 hours, how far is his farm from town?

Answer 1

40* (3.5-t) =30*t

140 - 40t = 30t

140 = 70t

t=2

40*1.5 = 60

30 * 2 = 60