甲糖水的浓度:180÷(180+120)=60%
乙糖水的浓度:150÷(150+350)=30%
设甲糖水取x克,乙糖水取(500-x)克.
60%x+(500-x)×30%
=500×42% 60%x+150-30%x
=210 30%x
=60 x=200 500-200
=300(克)答:甲糖水取200克,乙糖水取300克.
甲糖水的浓度:180÷(180+120)=60%
乙糖水的浓度:150÷(150+350)=30%
设甲糖水取x克,乙糖水取(500-x)克.
60%x+(500-x)×30%
=500×42% 60%x+150-30%x
=210 30%x
=60 x=200 500-200
=300(克)答:甲糖水取200克,乙糖水取300克.