SOLUTION: Jamie is 5 years older than her sister Amy. If the sum of their ages is 19, how old is Jamie?
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Question 285610: Jamie is 5 years older than her sister Amy. If the sum of their ages is 19, how old is Jamie?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
j = jamie's age.
a = amy's age.
j = a + 5
sum of their ages is 19 means the sum of a + a + 5 = 19.
This becomes 2a + 5 = 19.
Subtract 5 from both sides of the equation to get 2a = 14.
Divide both sides of the equation by 2 to get a = 7.
amy is 7 years old.
jamie is 7 + 5 = 12 years old
sum of their ages is 19.
means jamie is 5 years older than amy.
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