Because her test turned out to be more difficult than she intended it to be, a teacher decided to adjust the grades by deducting only half the number of points a student missed. For example, if a student missed 10 points, she received a 95 instead of a 90. Before the grades were adjusted the class average was A. What was the average after the adjustment?
(A)
(B)
(C)
(D)
(E)A+25
Solution for GRE Math Problem 27:
The sum of all vertical segments in the path P-R-T equals to the vertical distance between P and T. The sum of all horizontal segments in the path P-R-T equals to the horizontal distance between P and T. The same for the path P-Q-T. So, these paths are equal.
Answer:C
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what is the answer to problem 28?can u please explain with necessary steps?
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