Question 702076
let a = the 10's digit
let b = the units
then
10a+b = "the number"
:
 If the value of a two digit whole number is three times the sum of its digits,
10a + b = 3(a + b)
10a + b = 3a + 3b
10a - 3a = 3b - b
7a = 2b
a = {{{2/7}}}b
The only value for b to equal single digit integer for a. b = 7
then a = 2
27 is the number
:
then the value of the number formed by interchanging the digits is the sum of the digits multiplied by what number (n)
72 = n(2+7)
72 = n(9)
n = 8