Question

a number is increased by 20 % and then decreased by 20 % find the increase or decrease percentage plz explain step by step and no bakwas here​

Answer 1

Answer:

There is a decrease of 4%.

Step-by-step explanation:

Let the number be 100.

The number is increased by 20%.

so, (20% of 100) + 100

= (20/100 ×100) + 100

= 20 + 100

= 120

Then the number decreased by 20%

so, 120 - (20% of 120)

= 120 - (20/100 × 120)

= 120 - 24

= 96

Decrease = 100 - 96

= 4

So, decrease percent = ( 4/100 × 100 )%

= 4%