Question

A number is increased by 20% and then decreased by 20%. Find the net increase or decrease percentage. ​

Answer 1

Answer:

percent decrease by 4

Step-by-step explanation:

Let the number to = 100

Increase in the number= 20% of 100 = (20/100)*100= 20

Increased Number = 100 + 20= 120

The resulting number decreased by 20% Decrease in the number= (20/100)x120))= 12x2=24

New number= 120-24 = 96

Now, net decrease =100-96 = 4

Net decrease = (net decrease/ Original number * 100) %

=(( 4/ 100 )*100) %

= 4%.

Hence, net percent decrease= 4%

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Answer 2

Answer:

Let the number be 100

increase of 20% = 100 + 20 = 120

decrease of 20% = 120 - 24 = 96

it is decrease percentage and the decrease percentage is 4%