Answer:
Lana is 15 and Susan is 30
Step-by-step explanation:
let Lana's age=x
Susan's age=2x
Their ages four years ago:
Lana=x-4
Susan=2x-4
Now their ages 4years ago was 37 so:
x-4+2x-4=37
3x-8=37
3x=37+8
3x=45
x=15
Since Lana's age is x,she is 15years
Since Susan's age is 2x,she is 30years
