Question

if the two digit number is twice of sum of digits and sum of digit is 9 then the number is

Answer 1

Let the no be x
Sum of the digits=9
x=2×9
x=18
so the no is 18

HOPE IT HELPS!!!

Answer 2

Let's think of the two digit number whose sum of the digits is 9.

They can be 18, 81, 27, 72, 36, 63, 45 and 54.

Out of the given numbers, you can see that the number 45 on reversing the digit, that is, 54 exceeds the given number by 9.

So, the given number is 45.

You can also solve this question by linear equations, but it is the simplest way to solve this type of questions that's why I am telling this to you.

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