单选题 Vanda's Butcher Shop sells packages of ground turkey and ground beef. Is the price for a pound of ground turkey less than that for a pound of ground beef?
(1)The price for a package of ground turkey is 30 percent greater than the price for a package of ground beef.
(2)A package of ground turkey weighs 25 percent more than a package of ground beef.

【正确答案】 C
【答案解析】[解析] (1)中因不知道一袋火鸡和一袋牛肉各自的重量是多少,所以求不出是一磅火鸡贵还是一磅牛肉贵,因此(1)不充分;(2)因不知道一袋火鸡和一袋牛肉的价格,所以(2)也不充分;设一袋牛肉的价格为a,重量为b,则一磅牛肉的价格为[*],根据(1)+(2)可得一磅火鸡的价格为[*],所以(1)+(2)充分。