SOLUTION: Jack is now 5 times as old Kelvin. in 10 years time Jack will be 3 times as old as Kelvin.How old are they.

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Question 1057044: Jack is now 5 times as old Kelvin.
in 10 years time Jack will be 3 times as old as Kelvin.How old are they.
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Let k be Kevin. Then Jack is 5k. So:
3(k+10)=5k+10
3k+30=5k+10
2k=20
k=10
Kevin is 10; Jack is 50. ☺☺☺☺