How many hours does mr katsande catch up to mrs katsande if mrs katsande left an hour ago travelling at 60km/hr however mr katsande travelled at 80km/hr
she's 60 km ahead when he starts
he's going 20km/hr faster.
60/20 = 3 hrs to catch up
he's going 20km/hr faster.
60/20 = 3 hrs to catch up