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?

gnistory Jul 2, 2024

#1**0 **

*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?*

(D – 7) = (9)(G – 7) ..............—> D – 7 = 9G – 63 (eq 1)

(D – 4) = (6)(G – 4) ..............—> D – 4 = 6G – 24 (eq 2)

subtract (2) from (1) – 3 = 3G – 39

36 = 3G

**Grogg = 12**

_{.}

Bosco Jul 2, 2024