Answer:
Sarah
Step-by-step explanation:
Alice: 75%
Mary: 80%
Sarah: 85%
Ellen: 60%
the red square shows that this is a right angle, so we can just subtract 52 to find z
90-52=z
38=z
Since 6 + 8 = 14 this is the longest that the third side can be.
The answer is B
9:6 I think. Because if you subtract 6 from 15 you get 9 and that is how many she needs to finish and she has already finished 6