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No. 64 Are at least 10 percent of the people in Country X who are 65 years old or older employed? (1) In Country X, 11.3 percent of the population is 65 years old or older. (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed. (B)
No. 103 A certain bag contains red, blue, and green marbles. What is the ratio of the number of green marbles to the number of red marbles in the bag? (1) The number of blue marbles in the bag is 2 times the number of green marbles in the bag. (2) The number of blue marbles in the bag is 3 times the number of red marbles in the bag.
(C) why not B here??
(C) why not B here??
No. 93 If the integer n is greater than 1, is n equal to 2 ? (1) n has exactly two positive factors. (2) The difference of any two distinct positive factors of n is odd. (B) No. 90 On Jane's credit card account, the average daily balance for a 30-day billing cycle is the average (arithmetic mean) of the daily balances at the end of each of the 30 days. At the beginning of a certain 30-day billing cycle, Jane's credit card account had a balance of $600. Jane made a payment of $300 on the account during the billing cycle. If no other amounts were added to or subtracted from the account during the billing cycle, what was the average daily balance on Jane's account for the billing cycle? (1) Jane's payment was credited on the 21st day of the billing cycle. (2) The average daily balance through the 25th day of the billing cycle was $540. (D)
No.131. The positive integer k has exactly two positive prime factors, 3 and 7. If k has a total of 6 positive factors, including 1 and k, what is the value of k ? (1) 3*3 is a factor of k. (2) 7*7 is not a factor of k. (D)
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