Asports drink recipe calls for 53 tablespoons of powdered drink mix for every 12 ounces of water. how many batches can you make with 5 tablespoons of drink mix and 36 ounces of water?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)