SOLUTION: John is 6 years older than his brother. He will be twice as old as his brother in 4 years. How old is John now.
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Question 698270: John is 6 years older than his brother. He will be twice as old as his brother in 4 years. How old is John now.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = John's age now
Let = his Brother's age now
given:
(1)
(2)
-----------------------
Substitute (1) into (2)
(2)
(2)
(2)
(2)
and
(1)
(1)
(1)
John is 8 yrs old
check:
(2)
(2)
(2)
(2)
OK
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