一头牛一天要吃32千克草。2头牛4天要吃多少千克草？*Z9|1J-H/L+_+Y2t6i.m3@-r3y
算式：提示)u3_7g(N8F0U2G*Z9|1J-H/L+_+Y2t6i.m3@-r3y
答：2头牛4天要吃)z6h*I8N*F(p千克草。*Z9|1J-H/L+_+Y2t6i.m3@-r3y