If Lake Ontario has a volume of 980 km^3 and a residence time of 6 years, what is the flow rate of water out of the lake in km^3/yr? (Give your answer rounded to the nearest number of km^3/yr.)
If Lake Titicaca has a residence time of 1343 years and an average annual flow rate of 4 km^3/year, what is the volume of the lake in km^3? V_Titicaca (Give your answer rounded to the nearest number of km^3.)