The price of each brush in the stationery department of Dongfeng Shopping Mall is 25 yuan, and the price of each calligraphy exercise book is 5 yuan. The shopping mall has formulated two promotion pre

The price of each brush in the stationery department of Dongfeng Shopping Mall is 25 yuan, and the price of each calligraphy exercise book is 5 yuan. The shopping mall has formulated two promotion preferential schemes: Party A.. ( 1)y A =5x+200,Y B =4.5x+225。

(2) Scheme A: 25× 10+50×5=500 yuan;

Scheme B: (25× 10+60×5)×0.9=495 yuan;

Two options: 25× 10+50×5×0.9=475 yuan,

So use plan A to buy 10 brushes and plan B to buy the rest.