Lee has a 300-gallon water tank that weighs 893 pounds when empty. With some water in the tank, it weighs 1,810 pounds. How many gallons of water are in the tank? (Note: Water weighs 8.3 pounds per gallon.)

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?