Ian picked up 16 red cars and 12 black cars from the floor of his room. he put the same number of each color car into 2 boxes. how many cars did he put in each box?

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%)