One cubic foot holds 7.48 gallons of water, and 1 gallon of water weighs 8.33 pounds. How much does 6.1 cubic feet of water weigh in pounds? In tons? It takes you 51 seconds to walk from the first (ground) floor of a building to the third floor. How long will it take you to walk from the first floor to the sixth floor (at the same pace, assuming all floors have the same height)?