Tank A contains 150 gallons of water and water is draining out of a rate of 6 gallons per minute. Tank B Contained 200 gallons of water and water is draining at a rate of 10 gallon per minute.

A. After how many minutes does the tank have the same amount of water?
B. How much water is in the tank at the time?
C. Which tank will empty first? Explain.