Question

if 9 is added to 10 per cent of a number , it gives the number itself . Find the number​

Answer 1

Answer:10

Step-by-step explanation:let the no. be 'x'.

Therefore, 10 percent of X =10x/100

=X/10

Now,

9+X/10=X

9=x-x/10

9=(10x-x)/10

9=9x/10

9X=9*10

9x=90

X=90/9

X=10

Answer 2

Answer:

Step-by-step explanation:

Let the number be x

10% of x = 10/100 × x

ACC.to question

If 9 is added to 10% of x it gives again x

So,

9 + 10/100x = x

9 + 1/10x = x

Taking LCM

90 + x = 10x

90 = 10x-x

90= 9x

x= 90/9

x= 10

So, the number is 10