(1)若购进“冰墩墩”摆件和挂件共花费了11400元,请分别求出购进“冰墩墩”摆件和挂件的数量.
(2)该商店计划将“冰墩墩”摆件售价定为100元/个,“冰墩墩”挂件售价定为60元/个,若购进的180个“冰墩墩”摆件和挂件全部售完,且至少盈利2900元,求购进的“冰墩墩”挂件不能超过多少个?
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