Question

in a 2 digit no. digit in units place is twice the digit in tens place if 27 is added to it digit are reversed find the no.​

Answer 1

Answer:

let the digit in tens place =x

then the digit in unit's place=2x

number is 10x+2x=12x

when the digits are reversed

digit at tens place=2x

digit at unit place=x

number is 10(2x)+x=20x+x=21x

according to the question

12x+27=21x

27=21x-12x

27=9x

x=3

digit at unit place =3

digit at tens place=2×3=6

number is 63 or 36