Question

the digits of a two-digit number differ by 3 if the digits are interchanged and the resulting number is added to the original number we get 143 what is the original number​

Answer 1

85

Step-by-step explanation:

let the number be xy then,

as difference between no.s is 3, then

eq1 x-y=3

10x+y+10y+x=143

11x+11y=143

x+y= 13 -eq2

based on eq 1,2

2x =16

x=8

y=5

so number is 85