A number is first decreased by 20% and then the new number is obtained is decreased by 20%.find the net increase and decrease percent.
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suppose number is 100
if it is increased by 20%it become 120
120 is decreased by 20%it become
120-120×20/100=96
so it decreased by 4%
if it is increased by 20%it become 120
120 is decreased by 20%it become
120-120×20/100=96
so it decreased by 4%
Abhijitganguli2:
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