A number is first increased by 20% and the resulting number is then decreased by 10%. Find the overall change in the number as percent.
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let the no be x
rge result after 20per. increase=1.2x
the result after 10per. decrease =1.2x*.9=1.08x
therefore :
( 1.08x-x)/x*100=8‰
rge result after 20per. increase=1.2x
the result after 10per. decrease =1.2x*.9=1.08x
therefore :
( 1.08x-x)/x*100=8‰
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