Step 1
Use the ratio of the number to the percentage to get the required answer.
Where,
Step 2
Get the required answer
The number of students that got B or a better grade on the test = 19 students rounded to a whole number.
The reciprocal of -4/5 is -5/4.
-5/4 x 25/16 = -125/64
The additive inverse of -4/5 is 4/5.
So -125/64 + 4/5 = -369/320
I hope this was right.
The answer is F
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