Question

The unit's digit of a two digit number is twice its ten's digit. If 18 is added to the number, the digits interchange their places. Find the number.​

Answer 1

Answer:

Your answer is 24.

Step-by-step explanation:

24 +18- 42.

Answer 2

Step-by-step explanation:

let tens digit of a two digit no be x

therefore units digit is 2x

Two digit no are in form of 10a+b you have learnt it

So 10x+2x.

=12x

If 18 is added 12x+18.

digits are interchanged

so tens digit=2x

unit digit=x.

.

so

10(2x)+x.

20x+x

21x .

According to the question

12x+18=21x

18=21x-12x

18=9x

18/9=x

2=x.

So units digit is 2 and tens digit is 4

no is 24

if it is correct then only mark my answer as brainlist answer