Q33: Enrollment in City College in 1980 was 83⅓ percent of enrollment in 1990. What was the percent increase in the college’s enrollment from 1980 to 1990?
A. 10% B. 16⅔% C. 20% D. 25% E. 183⅓% Q34: Professor Vásquez 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. 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. 希望大牛给予解答,谢谢~~~   |