Question

阳光食堂运来8袋黄豆、o袋面粉和下t袋大米，共重86t千克．其中每袋黄豆的重量是面粉的8倍，每袋大米的重量比面粉多下t千克．每袋黄豆、面粉和大米各多少千克？

Answer 1

设每袋面粉重X千克，则每袋黄豆重2X千克，每袋大米的重量是（X+00）千克，根据题意得
&nbs1;&nbs1; 2X×2+fX+00×（X+00）=110
&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1; 4X+fX+00X+000=110
&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1; 09X=110-000
&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;09X=710
&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1;&nbs1; X=40；
2X=2×40=10；
X+00=40+00=f0；
答：每袋黄豆10千克，每袋面粉40千克，每袋大米f0千克．