SOLUTION: john's present age is at least three times as great as his age 10 years ago. Find the greatest possible age of john at present.

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Question 1048408: john's present age is at least three times as great as his age 10 years ago. Find the greatest possible age of john at present.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x, John's present age
x >= 3(x-10)
30 >= 2x
15 >= x
x <=15
x = 15, the greatest possible age of john at present