一所中学食堂本周来大米7袋面粉4袋共1640千克,上周运来大米3袋面粉6袋共重1560千克,问每袋面粉、大米各

多少千克? 不要方程!!!!!!!
2024-12-20 14:30:28
推荐回答(3个)
回答1:

7+3=0
4+6=10
所以一共是大米和面粉各10袋
所以1袋大米和1袋面粉是(1640+1560)÷10=320千克
所以4袋大米和4袋面粉是320×4=1280千克
而7袋大米和4袋面粉是1640千克
所以1袋大米是(1640-1280)÷(7-4)=120千克
1袋面粉320-120=100千克

回答2:

大米3袋面粉6袋共重1560千克,

大米1袋面粉2袋共重1560÷3=520千克,
所以
每袋大米=(1640-520×2)÷(7-1×2)=600÷5=120千克
每袋面粉=(520-120)÷2=400÷2=200千克

回答3:

10袋大米+10袋面粉=1640+1560=3200千克,

那么,1袋大米+1袋面粉=3200/10=320千克
3袋面粉=1560-320*3=600千克 1袋面粉=600/3=200千克
则,1袋大米=320-200=120千克

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