In order for Brady to earn a B in his biology course, his test scores must average at least 80%. On the first 5 tests, he has an average of 77%. There is one test remaining in the course. What is the minimum score Brady needs to earn on the last test to receive a B in the class?
Total of percentages in first 5 tests = 77 x 5 = 385. Minimum total of the percentages in the 6 tests = 80 x 6 = 480. Required minimum percentage in last test = 480 - 385 = 95% The answer is 95%.
