We are given ratio 27 to 30 that is 27:30.
We need to find the 10% using the rate 27:30.
27:30 could be written in fraction form as 27/30.
On dividing 27/30, we get 0.9.
Now, on multiplying 0.9 by 100, we get 90.
Therefore, 27/30 gives us 90%.
In order to find the 10%, we need to subtract 27/30 from 1 because 1 represents 100%.
1-27/30 = 30/30 -27/30 = 3/30.
