Question

if the number is increased by 10% and the resulting number is again increased by 10% what is the percentage in increase finally​

Answer 1

Answer: 21 %

mark as brainliest

Step-by-step explanation:

Let a number be x then.

new number after increase of 10 % = x +10 % of x = x + 10x /100 = 11x /10

Now,

Another new number with 10% increase = 11x/10 + 10% of 11x /10

                                                                   = 11 x /10 + 10/100 *11x /10

                                                                 =121x /100

So, increase in number = 121x/100 - x = 21x/100

% increase = (21x/100 )/ x *100

                  = 21 %