Question

pls answer my question

Answer 1

let the no. be 10x+y
thus,
x+y=10.......(1)

reversing the no.,
10y+x
a/q,
10x+y=10y+x+36
9x-9y=36
x-y=4......(2)

(1)+(2)
x+y=10
x-y=4
..............
2x=14
x=7

substituting the value of x=7 in (2)
x-y=4
y=7-4
y=3