The school library has twice as many story books as science and technology books, one story book is less than science and technology books, and there are 799 story books and science and technology boo
The school library has twice as many story books as science and technology books, one story book is less than science and technology books, and there are 799 story books and science and technology books more than science and technology books.
(27 1+2 1)÷(3- 1)
=292÷2
= 146 (Ben)
146+271= 417 (Ben)
A: The school library has 4 17 story books and 146 science and technology books.