SOLUTION: Paul is half his sisters age and three years older than his brother , the sum of their ages is 33 how old are theyu

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Question 1087579: Paul is half his sisters age and three years older than his brother , the sum of their ages is 33 how old are theyu
Answer by ikleyn(52787) About Me  (Show Source):
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Let x be the Paul's age.


Then his sister is 2x years old and his brother is (x-3) years old.


In total,  x + 2x + (x-3) = 33.


Simplify and solve for x:

4x - 3 = 33  ---->  4x = 36  ---->  x = 36%2F4 = 9.


Answer.  Paul is 9 years old; his sister is 2*9 = 18 years old, and Paul's brother is 9-3 = 6 years old.