Q8 at a certain food stand the price of each apple is

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Q8: At a certain food stand, the price of each apple is ¢ 40 and the price of each orange is ¢ 60. Mary selects a total of 10 apples and oranges from the food stand, and the average (arithmetic mean) price of the 10 pieces of fruit is ¢ 56. How many oranges must Mary put back so that the average price of the pieces of fruit that she keeps is ¢ 52? A. 1 B. 2 C. 3 D. 4 E. 5 Answer: ------------------------------------------------------------------------------------------------------------ Q9: Professor Vasquez gave a quiz to two classes. Was the range of scores for the first class equal to the range of scores for the second class? (1)In each class, the number of students taking the quiz was 26, and the lowest score in each class was 70. (2) In each class, the average (arithmetic mean) score on the quiz was 85. ------------------------------------------------------------------------------------------------------------ Q10: If x and y are positive integers, what is the value of x? (1) 3 x 5 y = 1,125 (2) y = 3 3
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------------------------------------------------------------------------------------------------------------ Q11: If d - 9 = 2d, then d = ------------------------------------------------------------------------------------------------------------ Q12: There are 11 women and 9 men in a certain club. If the club is to select a committee of 2 women and 2 men, how many different such committees are possible? A. 120 B. 720 C. 1,060 D. 1,520 E. 1,980 Answer: ------------------------------------------------------------------------------------------------------------ Q13: Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees? (1) Two of the interior angles of ABCD are right angles. (2) The degree measure of angle ABC is twice the degree measure of angle BCD. ------------------------------------------------------------------------------------------------------------ Q14: $10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years is given by D(t) = 10,000 {1+(r/100)} t . What amount will the deposit grow to in 3 years? (1) D(t) = 11,000 (2) r =10 4
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