Question

one of the two digits number is three times the other digits .the digits number and the original number you get 888 what is the original number

Answer 1

Let the unit digit = x

and tens digit = 3x

Number = x+30x = 31x

A/Q,

aftrer interchanging the digits,

Number = 3x+10x = 13x

 New Number = Number + Original Number = 88 

New Number = 13x+ 31x = 88

or,   44x = 88

or,        x = 88/44 = 2

Hence the Original Number = 31x = 31*2 = 62