Current location - Training Enrollment Network - Mathematics courses - Seek answers to math problems.
Seek answers to math problems.
Set up a junior high school mathematics original plan to donate X books and a senior high school mathematics original plan to donate (3500-X) books.

120% X+ 1 15%(3500-X)= 4 125

The solution is X=2000.

Junior high school mathematics originally planned to donate 2000 copies.

Senior high school mathematics originally planned to donate 1500 volumes.

So junior high school donated 400 more copies.

High school donated another 225 books.