John is three quarters the age of his father and the difference in their ages is 15 years
+36916 J = 3/4 F
F-J = 15 but J= 3/4F Put this in for J
F - 3/4F = 15
1/4 F = 15
F = 60 y/o J= 3/4 F = 3/4 (60) = 45 y/o
+36916 J = 3/4 F
F-J = 15 but J= 3/4F Put this in for J
F - 3/4F = 15
1/4 F = 15
F = 60 y/o J= 3/4 F = 3/4 (60) = 45 y/o
