Question

a number is first increased by 25% and then decreased by 25% .find the net increase or decrease prevent.​

Answer 1

Answer:

Let the original number be x.

Given the number increased by 25% = x + 0.25x = 1.25x.

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.

Hope this helps!