How old is gabriela now

Question

Kevin is 2 times as old as Grabriela. 12 years ago, kevin was 6 times as old as Gabriela.

Answer 1

 

K = 2G

 

K-12 = 6(G-12)

 

2G-12 = 6G - 72

 

0 = 6G - 72 - 2G + 12

 

0 = 4G - 60

 

60 = 4G

 

G=15

 

Kevin is 30 and Gabriela is 15.

12 years ago, Kevin was 18 and Gabriela was 3.