Mrs. Watson is grading 120 final exams from her American History class. On Monday, she grades 60% of the exams. On Tuesday, she grades 75% of the remaining exams. On Wednesday, how many more exams does she need to grade?
Let's be accurate as possible. Think before you answer.
12
On Monday, Mrs.

Watson grades 120 x 60% = 72 final exams.

At the end of Monday, she has 120 - 72 = 48 exams left to grade.

On Tuesday, she grades 48 x 75% = 36 final exams.

On Wednesday, she has 48 - 36 = 12 exams left to grade.

.

Therefore, the answer is 12