坐旋转木马每人2元,9人要多少钱?10人要多少钱?9U.v6p-?1}(g(m4v
算式:提示4R)K+i5r9]7w)J'](m:]+J8z;d5q9U.v6p-?1}(g(m4v
答:9人要9y(l.d*m(s/q*U4F8Q/p7T/{.`元,10人要5x/V*Q-B4o1}6y-r)X6`元。9U.v6p-?1}(g(m4v