SOLUTION: Ron wants to take an early retirement in 10 years when he will be twice as old his daughter Sonia. Sonia is 25 years younger than her father. How old is Ron now? How he be when he

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Question 706425: Ron wants to take an early retirement in 10 years when he will be twice as old his daughter Sonia. Sonia is 25 years younger than her father. How old is Ron now? How he be when he retires?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Ron wants to take an early retirement in 10 years when he will be twice as old his daughter Sonia.
Sonia is 25 years younger than her father.
How old is Ron now? How he be when he retires?
:
let r = Ron's age now
then
(r-25) = his daughter's age
:
"In 10 years when he will be twice as old his daughter Sonia.
r + 10 = 2((r-25)+ 10)
r + 10 = 2(r - 15)
r + 10 = 2r - 30
10 + 30 = 2r - r
r = 40 yrs is Ron's age
:
" How he be when he retires?" I'm not sure how he be, perhaps very happy.