Question

If a number is increased by 30% and then decreased by 30% the net increase / decrease percentage will be

Answer 1

Answer:

decrease

Step-by-step explanation:

if both increase and decrease % are there it always. decrease

Answer 2

Net decrease percentage is 9%.

Step-by-step explanation:

Let the number be x. After increasing 30%, the new number = $x+30\%$ of x = 1.30x

Then after decreasing 30%, the final number = $1.30x-30\%$ of 1.30x = 0.91x

So, decrease % = $\frac{initial-final}{initial}\times 100=\frac{x-0.91x}{x}\times 100=9\%$