If a no. Is increased by 20% and then decreased by 20%.find the net increased or decreased?
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take the no as 100.
if increase by 20% no become 120(100+20%)
then decreased by 20% no become 96(120-20%)
so net decrease will be 4%
if increase by 20% no become 120(100+20%)
then decreased by 20% no become 96(120-20%)
so net decrease will be 4%
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