A number is increased by 20%. By what percent the new number is decreased so that the number restores the original value ?
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let the no. be 100
if it increases by 20%
it will become 120
120 - 100/ 100 × 100
20/100 × 100
20%
if it increases by 20%
it will become 120
120 - 100/ 100 × 100
20/100 × 100
20%
yasummu:
but if decrease 20% from 120 we get 96 not 100
I made a mistake
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