+452 Seven years ago, Grogg's dad was $9$ times as old as Grogg. Four years ago, Grogg's dad was $6$ times as old as Grogg. How old is Grogg's dad currently?
+130462 Let D be the age of Grogg's dad now
Let G ve the age of Grogg seven tears ago
Seven years ago
(D - 7) = 9G → D - 9G = 7 (1)
Four years ago (Greg's age = G + 3 )...so....
(D - 4) = 6(G + 3) → D - 4 = 6G + 18 → D - 6G = 22 (2)
Subtract (1) from (2)
3G = 15
G = 5
D = 9G + 7
D = 9(5) + 7 = 52
