SOLUTION: Ben is 3 times as old as Kevin and is also 10 years older than Kevin. How old is Ben?

SOLUTION: Ben is 3 times as old as Kevin and is also 10 years older than Kevin. How old is Ben?

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Question 982301: Ben is 3 times as old as Kevin and is also 10 years older than Kevin.
How old is Ben?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Ben's age
Let = Kevin's age
-----------------------
(1)
(2)
--------------------
Substitute (1) into (2)
(2)
(2)
(2)
and
(1)
(1)
(1)
----------------
Ben is 15
----------
check:
(2)
(2)
(2)
OK
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