Question

the sum of the digits of a two-digit number is 9 if the digits are reversed then the new number obtained is 7 more than the original number find the number

Answer 1

The sum of the digits of a two-digit number is 9. When we interchange the digits, it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?

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9 ANSWERS



Wikrom Thamchareonkit

Answered Nov 17

Let’s say x is the unit digit and y is the tenth digit.

y+x = 9 -> y=9-x

10x+y = 10y+x+27

10x+9-x = 10(9-x)+x+27

10x+9-x = 90–10x+x+27

18x = 108

x = 6

so y = 3

let’s check

63 - 39 =27

27 = 27 (correct)

hope it will help you. I don't know exact answer but I know that it will help you.