
设甲种鱼苗为x尾,乙种鱼苗为(6000-x)尾0.5x+0.8×(6000-x)≤42000.3x>=600x>2000设甲种鱼苗为x尾,乙种鱼苗为(6000-x)尾90%x+95% ×(6000-x)≥93% *60000.05x<=0.02*6000x<=2400

设甲种鱼苗为x尾,乙种鱼苗为(6000-x)尾0.5x+0.8×(6000-x)≤42000.3x>=600x>2000设甲种鱼苗为x尾,乙种鱼苗为(6000-x)尾90%x+95% ×(6000-x)≥93% *60000.05x<=0.02*6000x<=2400