There are 320 science and technology books and story books in the school library. The ratio of science and technology books to story books is only 3:2. How many story books are there? fast

There are 320 science and technology books and story books in the school library. The ratio of science and technology books to story books is only 3:2. How many story books are there? fast

There are 3x science and technology books and 2x story books
　　3x+2x=320
　　5x=320
　　x=64
Science and technology books have 3x = 3 × 64 = 192
Story books have 2x = 2 × 64 = 128
A: 128 story books

There are 960 science and technology books and story books in the school library 1) Science and technology books are 60% of story books. How many science and technology books are there? (2) Science and technology books are 60% of story books. How many books are fewer than story books? (3) Science books are 30% less than story books. How many science books are there? (4) There are 30% more sci-tech books than story books. How many sci-tech books are there?

1. Story x technology 0.6x x + 0.6x = 960
2 and question 1
3 stories x Technology (1-0.3) x
Just push it down

There are 3600 story books in the school library. There are one third more science and technology books than story books. How many science and technology books are there

3600 * (1 + 1 / 3) = 4800
The typical title of unit 1 is unit 1. Unit 1 is known in storybook, and it is done by multiplication. There is a multiple word behind it, so it is necessary to add 1 / 3

The library has 400 science and technology books, 3 less than story books 8. How many story books are there?

400÷（1-3
8），
=400÷5
8，
=640 (copy)
A: there are 640 story books

The library has 400 science and technology books, 3 less than story books 8. How many story books are there?

400÷（1-3
8），
=400÷5
8，
=640 (copy)
A: there are 640 story books

The library has 400 science and technology books, 3 less than story books 8. How many story books are there?

400÷（1-3
8），
=400÷5
8，
=640 (copy)
A: there are 640 story books

There are 400 story books in the library. There are 3 / 8 fewer science and technology books than story books. How many science and technology books are less than story books? We approved, the answer is 150 copies, gram I how to calculate are 250 copies, how to deal with ah

400 * 3 / 8 = 150. What you calculate is the number of science and technology books

There are 400 science and technology books in the library, 3 / 8 less than story books. How many science and technology books are less than story books

Science and technology books are 3 / 8 less than story books, so science books are 1-3 / 8 = 5 / 8 of story books

There are x literature and art books in the library. There are 60 story books 3.2 times more than the literature and art books. How many literary books and story books are there

Literature and art books x story books 3.2X + 60

There are x literature and art books in the library, and 60 story books are 3.2 times more than that of literature and art books. (1) how many literature and art books and story books are there in the library? (2) when x = 320 Find the equation!

When x = 320
2 x + 60 + 320=
=3.2X320+60+320
=1404 (copy)