Question

the sum of the digit of a two digit no is 10if 36 is substract from the no of digit interchange their places .find the no

Answer 1

Let the digit at one's place be x and tens be y x+y=10 y=10-x............[1] number: 10y+x  reverse: 10x+y 10y+x-36=10x+y 9y-9x=36 y-x=4 from eq[1] 10-x-x=4 6=2x x=3  and y=7 no is 73   Pls mark it the brainliest