MathematicsCalculus and AnalysisReal AnalysisIntegrals107864 Integration Word Problems : Rate of change Add Remove Suppose that a tank initially contains 2000 gal of water and the rate of change of its volume after the tank drains for t min is '(t)=(0.5)t)-30 (in gallons per minute). How much water does the tank contain after it has been draining for 25 minutes? keywords: integration, integrates, integrals, integrating, double, triple, multiple Solution Summary A rate of change problem is solved.