Canoe A needed 1.5 hours to travel from Duck Wharf to Bugler's Bay. Its rate in still water was 12 km/hr, but it was going with the current.

Canoe A needed 1.5 hours to travel from Duck Wharf to Bugler's Bay. Its rate in still water was 12 km/hr, but it was going with the current. Canoe B was traveling at 14 km/hr in still water, but it was going from Bugler's Bay to Duck Wharf, and the current was against it. Canoe B took five hours to make the trip. What was the rate of the current?