数量 | 1~15筐 | 16~30筐 | 30筐以上 |
单价 | 105元 | 100 | 95元 |
“鲜食代”蔬菜店购买了12筐西红柿,“日日鲜”蔬菜店购买了26筐西红柿,“绿芽”蔬菜店购买了22筐西红柿。
(1)如果单独购买,他们三家蔬菜店各需要多少元?
(2)如果他们三家蔬菜店联合购买,共需要多少元?
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