两道数学求助，括号里是答案，谢！
PS :Five people meet and exchange handshadkes.if exactly 3 of the people each shake hands with 3 people,and if 1 person shake hands with only 1other person,then what is the least number of handshakes that could have been exchanged?(6)
DS: Vanda’s butcher shop sells packages of gound turkey and ground beef,if the price of a pound of ground turkey less than that of a pound of ground reef?
(1) the price of 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.(c)
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