Question

in a two digit number one digit is twice the other digit if the digit are interchange and added to the original number the sum is 132 . Find the two digit number? (Please answer me as quick as possible)

Answer 1

Let the tens place digit be x and ones place be 2x

Number formed = 10x + 2x = 12x

Number formed on interchanging the digit
= 2x × 10 + x
= 20x + x
= 21x


Therefore, according to question :
12x + 21x = 132
33x = 132
x = 132/33
x = 4


Therefore , Number = 12x = 12×4 = 48
Or 21x = 21×4 = 84


Both 48 or 84 can be the answer .....
Hope it hell you. .....