某种感冒冲剂,盒有12袋,每袋a克。儿童每次冲服b克,每天3次。妈妈买了c盒,花了30元。
12a 30÷c 12a÷b 12a÷(3b)
一盒感冒冲剂多少元? 一盒感冒冲剂可以让儿童服用几次? 一盒感冒冲剂可以让儿童服用几天? 一盒感冒冲剂有几克?
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