Chloe earned a grade of 87% on her multiple choice math final that had a total of 200 problems. How many problems on the final exam did Chloe answer correctly?

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%)