Question

the sum of digit of a two digits no. is 8 . If 36 is added to the no. the digit inter change their place . find the no.

Answer 1

We can solve it using simultaneous equations

Let the digit in the units place be x
Let the digit in the tens place be y
Therefore, the original number - 10y+x
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According to the given conditions

x + y = 8
And
10y + x +36 = 10x +y
9x+9y=36
x+y =4
Now solve it simultaneously and you can get the answer.. HOPE IT HELPS