Question

A number increases by 10%, and then decreases by 10%. will the result be greater than, less than, or equal to the original number? explain.

Answer 1

It would be less then I believe. An example would be: 20 x .1 = 2, 2+20= 22, 22 x .1 = 2.2, 22-2.2 = 19.8
You would end up with 19.8 when you started with 20

Answer 2

it may be a bit wired , by the resultant is less than original number !

you can prove by taking any number, and if you want to know how, comment !