Answer:

6

Step-by-step explanation:

3 +(3+3)

3+6

9 therefore the sum of the digit is 9 so we got number as 36

Answer:

Let ten's place digit = x

Therefore, one's digit = 2x

x + 2x = 9 (given in the question)

= 3x = 9

= x = 9÷3 = 3

So, ten's place digit = x = 3

= one's place digit = 2x = 2×3 = 6

So, the number is 36