Question

a number is first increased by 25% an then decreased by 25%.Fin the net increas or decrease percent.
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Answer 1

Answer:

Net decrease by 6.25%

Step-by-step explanation:

let the number be x

then incresed by 25%

x+25x/100=5x/4

now, decrease this no.by 25%

5x/4-25%of 5x/4

you will get 15x/16

then calculate net decresement by subtracting x-15x/16=x/16

now calculate percentage

x/16x *100 now you will get 25/4%

I.e,6.25%

Answer 2

let the original number be X

given the number increased by 25%= X + 0.25x =1.25x

Step-by-step explanation:

given the number decreased by 25%=1.25 - 0.25(1.25)

0.9375

% change= x - 0.9375/x * 100%

=. 0.0625*100%

=6.25

the decrease% is 6.25

this is your answer