Question

a number is increased by 20 percentage and then decreased by 20 percentage. find the net inrease or decrease percent.

Answer 1

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Here is the answer



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)×120))= 12×2=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%

Hope this will help you....