SOLUTION: Lukas was 50 years old when his grand daughter was born. Now he is 2 years more than 4 times his grand daughter's age. How old is his grand daughter?
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Question 849369: Lukas was 50 years old when his grand daughter was born. Now he is 2 years more than 4 times his grand daughter's age. How old is his grand daughter? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = Lukas's age now
Let = his grand daughter's age now
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The difference in their age will always be 50 years, so:
(1)
(2)
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(1)
Substitute this into (2)
(2)
(2)
(2)
The grand daughter is 16
check:
(1)
(1)
and
(2)
(2)
(2)
(2)
OK
