Question 844077
Dana=d
Rene=2b
4 years ago
Dana=d-4
Rene=2d-4
if Rene's age was 3 times older than that of Rene then 3ˇÁDana's age=Rene's age at that time
so 2d-4=3(d-4)
2d-4=3d-12
12-4=3d-2d
d=8
so Dana's age is 4years
Rene's age is 36years
if Dana's age is d
Rena's age is 2d