Question

one of the two digits of a two digit number is three times the other digit. if you interchange the digits of this two digit number and add the resulting number to the original number, you get 88. what is the original number?

Answer 1

Hey

Here is your answer,

let the unit no.be x
then the tens no.=3x

original no.=10(3x)+x
                     = 31x
interchanged no.=10(x)+x
                             =13x

according to question =13x+31x=88
                                       44x=88
                                       x=88/44
                                       x=2
unit no.=x=2
tens no.=3x=6
original no.=62 

Hope it helps you!