The digits of a two-digit number differ by 3. If digits are interchanged and theresulting number is added to the original number, we get 121. Find the original number. Pyaal dedo ♥ About the author Peyton
We Have :- a two digit number To Find:- number Solution:- let the first digit be x second digit become x + 3 acc to the question now 10(x) + (x + 3) + 10(x + 3) + x = 121 10x + x + 3 + 10x + 30 + x = 121 11x + 3 + 11x + 30 = 121 22x + 33 = 121 11(2x + 3) = 121 2x + 3 = 121/11 2x + 3 = 11 2x = 8 x = 8/2 x = 4 x + 3 = 4 + 3 = 7 so the original number is 47 Reply
We Have :-
a two digit number
To Find:-
number
Solution:-
let the first digit be x
second digit become x + 3
acc to the question now
10(x) + (x + 3) + 10(x + 3) + x = 121
10x + x + 3 + 10x + 30 + x = 121
11x + 3 + 11x + 30 = 121
22x + 33 = 121
11(2x + 3) = 121
2x + 3 = 121/11
2x + 3 = 11
2x = 8
x = 8/2
x = 4
x + 3 = 4 + 3 = 7
so the original number is 47