The riverside zoo bought 10 1/4 tons of animal feed they fed 2 and 1/3 tons of it yesterday how much animal feed does the riverside zoo have left?

Find a common denominator (which is 12). 10 1/4 tons becomes 10 3/12 tons or 123/12 tons. They fed 2 1/3 tons or 2 4/12 (28/12) tons to the animals. Subtracting the amount fed (28/12 tons) from the total amount (123/12 tons), the amount left is 95/12 tons, or 7 11/12 tons.