Suppose that you are taking a course that has four tests. The first three tests are each worth 20% of the course grade, and the fourth test is worth 40% of the grade. To get a B in the course, you must have an overall average of at least 80%.

Your grades on the first three tests were: Test 1 =
86
%, Test 2 =
98
%, and Test 3 =
72
%.

What is the minimum score you need on the fourth test to get a B in the course?.

Your answer is:
%
(Round to at least 1 decimal place)