SOLUTION: five years ago , jerry was 2/3 as old as jeff. ten years from now , he will be 5/6 as old as jeff will be. how old is each now

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: five years ago , jerry was 2/3 as old as jeff. ten years from now , he will be 5/6 as old as jeff will be. how old is each now      Log On


   

Question 1114637: five years ago , jerry was 2/3 as old as jeff. ten years from now , he will be 5/6 as old as jeff will be. how old is each now
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
r, jeRry
f, jeFf

system%28r-5=%282%2F3%29%28f-5%29%2Cr%2B10=%285%2F6%29%28f%2B10%29%29

-

system%283%28r-5%29=2%28f-5%29%2C6%28r%2B10%29=5%28f%2B10%29%29

system%283r-15=2f-10%2C6r%2B60=5f%2B50%29

system%283r-2f=5%2C6r-5f=-10%29
You decide what you want to do from here.


-
jeff, 20
jerry, 15

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
five years ago , jerry was 2/3 as old as jeff. ten years from now , he will be 5/6 as old as jeff will be. how old is each now
DO NOT FOLLOW THIS PERSON!! The 2 equations he has: 3r - 2f = 5, and 6r - 5f = 10 will give you Jeff's age as ZERO (0).

If Jeff is 0, what does that make him 5 years ago, - 5? I wonder what it feels like to be - 5 years-old.