甲数是180,乙数是甲数的70%,是丙数的6\7,这三个数的平均数是多少?(V/I3y0w/F1O2\5}.R
解:
算式:提示8\:j-P7S9H3u)z9X.A0d(V/I3y0w/F1O2\5}.R
答:这三个数的平均数是7Z;[2B。(V/I3y0w/F1O2\5}.R