Question

A number is first increased by 15%
and then reduced by 15%. By what
percentage does the number change​

Answer 1

Answer:

let the number=100

the resulting number=

100×(1+15/100)×(1-15/100)

=100×115/100×85/100

=97.75

it changes=(100-97.75)=2.25%

Answer 2

Please refer to the attachment

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