William has a 26 liter glass tank. first, he wants to put some marbles in it, all of the same volume. then, he wants to fill the tank with water until it's completely full. if he uses 85 marbles, he will have to add 20.9 liters of water

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !