Question

NH4NO3 规格50kg\袋 单价60元、袋 CO(NH2)2 50kg\袋

Answer 1

选择A

NH4NO3 50kg 氮含量 = 50 * (14 * 2 ) / (14*2+4+3*16)= 17.5 kg

每千克氮的价格 = 60 / 17.5 = 24/7 元

CO(NH2)2 50kg 氮含量 = 50 * (14*2)/(12+16+14*2+4) = 23.3 kg

总价格 = 23.3 * 24/7 = 79.9

选择A