Current location - Training Enrollment Network - Books and materials - A has 130 books, and B has 70 books. After how many books A gives B, the ratio of the number of books A and B is 4: 1.
A has 130 books, and B has 70 books. After how many books A gives B, the ratio of the number of books A and B is 4: 1.
130 plus 70 equals 200 copies.
4 plus 1 equals 5.
200 divided by 5 equals 40 books.
40 times 4 equals 160 copies.
40 times 1 equals 40 copies.
70 minus 40 equals 30 copies.
Answer: After Party B gives Party A 30 copies, the ratio of copies of A and B is 4: 1.