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题库 / Prep2007E2-DS-38
Some of the students enrolled at College T are part-time students and the rest are full-time students. By what percent did the number of full-time students enrolled at College T increase from the fall of 1999 to the fall of 2000 ?
(1) There were 50 more full-time students enrolled at College T in the fall of 2000 than in the fall of 1999.
(2) The total number of students enrolled at College T increased by 5 percent from the fall of 1999 to the fall of 2000.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
设（F2-F1）／F1=50/F1条件一单独不行；
只知道总体的增长率也不知道F的增长率啊，条件2单独也不行；
条件一和条件二一起也不行。 （F2-F1）+（P2-P1）=0.05A， 你不知道P1和P2的变化，也不知道A为多少就肯定不知道F的增长率啊