A tank of gas is filled by two valves in 50 minutes. The first valve alone fills the tank in 2 hours, while the second valve can fill 20 cubic feet more gas than the first valve every minute. What is the capacity of the tank?
A tank of gas is filled by two valves in 50 minutes. The first valve alone fills the tank in 2 hours, while the second valve can fill 20 cubic feet more gas than the first valve every minute. What is the capacity of the tank?