1÷( 120+ 130),
= 1÷560,
= 1×605,
= 12 (minutes);
96÷( 120× 12- 130× 12),
=96÷ 15,
=96×5,
=480 (pieces).
A: Now both Mr. Li and Mr. Xiaohua will spend 65,438+02 minutes tidying up. This batch of books is 480.