素菜 鸡蛋西红柿:6.8元/份 炒胡萝卜:4.2元/份 素茄子:3.6元/份 荤菜 葱爆羊肉:10.5元/份 宫保鸡丁:8.8元/份 红烧排骨:15.6元/份 汤 鸡蛋汤:2.5元/份 冬瓜汤:2.2元/份 主食 米饭:0.5元/碗 馒头:0.3元/个 |
1.西单小学今天订的午餐是鸡蛋西红柿、红烧排骨、鸡蛋汤和馒头,这顿午餐每人需要花多少元?
2.如果一顿饭要求荤菜、素菜、主食和汤都要搭配好,你想怎样搭配?需要花多少元?
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