There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4:6. How many story books are there? There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4 to 6. How many story books are there? There are two ways to solve it!

There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4:6. How many story books are there? There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4 to 6. How many story books are there? There are two ways to solve it!

Method 1
Science and technology books: story books = 4:6, science and technology books account for 4 / 10 of the total, story books account for 6 / 10 of the total
There are 300 × 4 / 10 = 120 scientific and technological books
There are 180 story books of 300 × 6 / 10
Method 2
Suppose there are x science and technology books and 300-x story books
x:300-x=4:6
6x=4(300-x)
x=120
300-x=180
There are 120 science and technology books and 180 story books

Xiaomi can finish reading a story book in 12 days, and soybeans can finish it in 2 days more than Xiaomi. Xiaomi reads 5 pages more than soybeans every day. How many pages are there in this book?

Soybean every day to see x page, millet every day to see x + 5 page
12*（X+5)=14X,
X=30
That's 30 pages

There are 300 science and technology books and story books in the book corner of class 6 (1), and the ratio of these two books is 4 to 6,

Set up x story books
x:300=6:(4+6)
x=300x6÷10
x=180
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