Question

You increase the size of a computer screen display by 20%. Then you decrease it by 20%. What is the size of the computer screen display now?

Answer 1

When you increase th size of computer

20% of 100%

{20% means 20/100}

= 20%

Increasing means adding 20% in 100%

= 120%

Decreasing 20%

120% - 120%of 20%

=120/100 - (120/100 × 20/100)

= 120% - 24%

= 96 %

The size of computer screen is 96%