Question

10. A number is increased by 30% and then it is decreased by 30%. Find the net increase or decrease per cent​

Answer 1

Answer:

0.

Step-by-step explanation:

Let the number be x.

First it increases by 30%.

so, 30×x/100= 3x/10.

Then it decreases by 30%.

so, also, -3×x/100= -3x/10.

Net increase or decrease:-

3x/10-3x/10.

= 3x-3x/10= 0/10.

= 0.

so, there is no net increase and decrese. So the answer will be 0.