Q14 if the average arithmetic mean of x y and 20 is

Q14:
If the average (arithmetic mean) of x , y , and 20 is 10 greater than the average of x , y , 20,
and 30, what is the average of x and y ?
A. 40
B. 45
C. 60
D. 75
E. 95
Answer:
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Q15:
If x and y are integers, is x + y greater than 0?
(1) x is greater than 0.
(2) y is less than 1.
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Q16:
What is the value of 3 -( x + y ) / 3 -( x - y ) ?
(1) x = 2
(2) y = 3
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Q17:
A driver completed the first 20 miles of a 40-mile trip at an average speed of 50 miles per
hour. At what average speed must the driver complete the remaining 20 miles to achieve
an average speed of 60 miles per hour for the entire 40-mile trip? (Assume that the driver
did not make any stops during the 40-mile trip.)
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Q18:
If the symbol ▼ represents either addition, subtraction, multiplication, or division, what
is the value of 6 ▼ 2?
(1) 10 ▼ 5 = 2
(2) 4 ▼ 2 = 2
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer:
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Q19:
In a survey of 200 college graduates, 30 percent said they had received student loans
during their college careers, and 40 percent said they had received scholarships. What
percent of those surveyed said that they had received neither student loans nor
scholarships during their college careers?
(1)25 percent of those surveyed said that they had received scholarships but no loans.
(2)50 percent of those surveyed who said that they had received loans also said that
they had received scholarships.
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