1200 copies.

analyse

800 x( 1+50%)= 800 x 1.5

= 1200 (Ben)

A: Science and technology books 1200.

analyse

The meaning of percentage

A number indicating that one number is a percentage of another number is called a percentage, also called a percentage or a percentage. It is a special form of fraction, which can't take units and doesn't represent specific quantities.

percentage point

In practice, the concept of "percentage point" is often used, expressed as a percentage.

Special discount, two percentage points is 2%.