Question

the sum of the digit of a two digit number is 9. if 27 is added to the number the digit of the no get reversed. find the number​

Answer 1

Answer:

Step-by-step explanation:

36

Answer 2

let digit in tens place be X

so digit in one's place is 9-x

hence the number is: 10x+9-x

9x+9

number with interchanged digits:10(9-x)+X= 90-10x+X=90-9x

9x+9+27=90-9x

9x+36=90-9x

9x+9x=90+36

18x=126

x=126/18

x=7

digit in tens place=7

digit in one's place=9-7=2

so the original number is 72