(1)500× 7 20 =175(克)500× 4 25 =80(克)答:500克黄豆中含蛋白质175克,脂肪80克.(2)500× 3 25 =60(克)500× 1 4 =125(克)答:500克花生中含蛋白质60克,脂肪125克.