Question

The sum of numbers when a number is increased by 10% and decreased by 10% is hundred what is the number​

Answer 1

Here this equation works well.

Let x = +10%

And y = -10%

So. The equation is

X + Y + XY/100.

Put the value of X and Y.

(+10) + (-10) + (+10) (-10)/100 = -1

So the decrease by 1 %

By the same u can find increase