Question

3) The sum of the digits of a two digit number is 10. If 36 is subtracted from the number,

the digit interchange their places Find the number​

Answer 1

73

Explanation:

Number is xy

x+y=10 .....a

(10x+y) - 36 = 10y+x

10x-x+y-10y=36

9x-9y=36

9(x-y)=36

x-y=4 ....b

a+b: 2x = 14 x = 7

y = 10 - 7 = 3

The two digit number is 73

check: 7 + 3 = 10

73-36 = 37 (73 vs 37)

Answer 2

impossible,unless number is zero