Question

In a 2-digit number, digit in units place is twice the digit in tens place. If 27 is added to it. digit are inversed.find the number.​

Answer 1

Answer:

Given -

• In a 2-digit number, digit in units place is twice the digit in tens place.
• If 27 added to it, digits are reversed.

_______________________________

Now,

Let ten's digit = x

Unit's digit= 2x

Required number = 10x +2x=12x

On interchanging the digits number

=> 10(2x) + x = 21x

According to question-

12x + 27 = 21x

27= 21x - 12x

27=9x

x=27/9

x= 3

12(3)= 36

So,36 is the answer.