Sam is 12 years older than John. For the last four years, Sam and John have been friends. Five years ago, Sam was 5 times as old as John. How old is Sam now?
+36916 J = John age now five years ago j-5
S = Sam age now = J+12 five years ago 5 (j-5)
J + 12 - 5 = 5 (J-5)
J + 7 = 5J - 25
4J = 32
J = 8 Sam now = J + 12 = 20 y/o
