Question

in a 2 digit number digit in units place is twice the digit in tens place .if 27 is added to it,digits are reversed.find the number ​

Answer 1

Let tens place digit be x
So units place digit= 2x
Original no.= 10x+2x= 12x
By reversing digits,
New no.= 20x+x= 21x
According to the question,
12x+ 27= 21x
27= 21x- 12x
27= 9x
27/9= x
3= x
So original no.= 12x= 36