粮店有大米20袋,面粉50袋,共重2250千克,已知1袋大米的重量和2袋面粉的重量相等,那么一袋大米重多少千克?4S4L7r6|1z/W;r2u.k;}/o*k'u0I;W(t0K8^.^
解:
算式:提示)?8P.o8D)V4V1p3R+A;j.H3s.d4F9E4S4L7r6|1z/W;r2u.k;}/o*k'u0I;W(t0K8^.^
即一袋大米重,O4A.e5M:l*]:x(E:_千克。4S4L7r6|1z/W;r2u.k;}/o*k'u0I;W(t0K8^.^