名称 | 草鱼 | 鲤鱼 | 鲅鱼 | 鲈鱼 | 带鱼 |
单价(元/千克) | 15.8 | 9.6 | 24.3 | 18.2 | 16.5 |
(1)张叔叔买了1箱带鱼,1箱带鱼5千克,他付给售货员100元钱,应找回多少元钱?
(2)李阿姨买了1条0.75千克的鲈鱼和1条2.6千克的鲅鱼,一共需要多少钱?
(3)王强有120元钱,他先买了1条3.5千克的草鱼,剩下的钱能买多少千克的鲤鱼?(得数保留一位小数)
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