SOLUTION: in 10 years, juan carlos will be three times as old as he was 6 years ago. How old is he now?

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Question 536792: in 10 years, juan carlos will be three times as old as he was 6 years ago. How old is he now?
Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
let
present age of juan carlos = j

six years ago carlos was = j-6
in 10 years carlos age will be = j+10
then
j+10=3(j-6)
j+10=3j-18
j-3j=-18-10
-2j=-28
-2j/-2=-28/-2
j=14

present age of juan carlos = j = 14 years old