Andrew K. answered 02/16/16
Tutor
4.4
(7)
Over 40 years of experence teaching mathematics at college level
let the integers be n and n+2
(they must be two apart)
then n+20 = 3(n+2)
therefore n+20 = 3n+6
therefore 2n = 14
hence n = 7 and n+2 = 9
the pair is 7 and 9
indeed: 7+20 = 3*9