Question

a number is incresed by 20% then again increse by 20% by what % the increased number should reduce so as to get back original number​

Answer 1

Answer:

Let x be the number

20% of x= 20x/100

Total sum=120x/100

20% of 120x/100=24x/100

Total sum=144x/100

So the number must be reduced by 1.44 times to get the original number

Answer 2

Answer:

275/9% = 30.55%

Step-by-step explanation:

Let the number be 100

When it is increased by 20%,

100 + 20/100 * 100

= 100 + 20 = 120

Now, when it is again increased by 20%,

120 + 20/100 * 120

= 120 + 24 = 144

Therefore, it should be reduced by 44 to be 100.

For this, we should find what percent of 144 the number "44" is.

So, 44/144 * 100%

= 275/9% = 30.55%