(1)求甲、乙两种消毒液的零售价分别是每桶多少元?
(2)由于疫情防控进入常态化,该单位需再次购买两种消毒液共300桶,且甲种消毒液的桶数不少于乙种消毒液桶数的,由于购买量大,甲、乙两种消毒液分别获得了20元/桶,15元/桶的批发价.求甲种消毒液购买多少桶时,所需资金总额最少?最少总金额是多少元?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2