The digits of a 2 digit number differ by 7. If the digits are interchanged and the resulting Number
is added to the original number, we get 121. Find the original number.
Answers
Answered by
1
Answer:
let the original number be 10x + y .
according to question,
x - y = 7
10x+y + 10y+x = 121
= 11x + 11y = 121
= x + y = 11
on adding the equations we get ,
2x = 18
x = 9
y = 9-7 = 2
therefore number is 29 or 92.
Similar questions