The pioneer answer of the second volume of mathematics class in the eighth grade

The school plans to buy 40 pens and some notebooks. The stores of Party A and Party B are priced at 10 yuan for each notebook in 2 yuan. Shop A offers a discount of 10% for pens and 20% for notebooks. The preferential way of store B is that there is no discount for buying notebooks, and 7.5% discount for notebooks. What range is more cost-effective to buy a notebook in shop A?

Experienced the fifth grade of mathematics.

How many subjects are there in Hangzhou senior high school entrance examination, and how many points are there in total?

How to effectively play the role of "reading guide before class" in primary school mathematics teaching

The clever behavior of mathematicians as children

Please help me write a comment and ask .. online reward, and wait for the answer.

Which Beijing takeaway is delicious?

Kong Shi's source exploration

Urgent! Ask for an article about mathematics! ~~~~~~~~~~

High school mathematics power function

Mathematics a complete set of stroke shapes.