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Laura is four years less than twice her son's age. The sum of their ages is 119. How old is Laura? How old is her son?

Laura is four years less than twice her son's age. The sum of their ages is 119. How old is Laura? How old is her son?
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Laura is four years less than twice her son's age. The sum of their ages is 119. How old is Laura? How old is her son?

User Moby Khan
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7.9k points

1 Answer

3 votes
L=Laura's age, S=sons age
L=2s-4
L+S=119
=> L=119-S
119-S = 2s-4
119+4=3s
123=3s
s=41 implies L=78
78+41=119
and 78=2*41-4
therefore Laura is 78 and her son is 41
User StackPusher
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7.2k points
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