Question

the sum of the digit of a 2-digit number is 9 If the number formed by reversing the digit is less than the original number by 54 find the original number​

Answer 1

Answer:

Its not possible with 54 (maybe a typing mistake) So i changed 54 to 45 in question and final answer is 27

Step-by-step explanation:

First no. be x

second no. be y

Number should be (10x+y)

given: x+y=9

          x=9-y ----eq 1

and

10x+y=(10y+x)-45

10x-x+y-10y=-45

9y-9x=45 ----eq 2

substituting x from eq 1 to eq 2

9y-9(9-y)=45

9y-81+9y=45

18y=45+81=126

y=7

substituting y to eq 1

x+7=9

x=2

Final Number is 27