SOLUTION: Jody's older brother is only three years less than twice jody's age. If sum of thier age is 30, then what is jody's brother age

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Question 1063745: Jody's older brother is only three years less than twice jody's age. If sum of thier age is 30, then what is jody's brother age
Answer by addingup(3677) About Me  (Show Source):
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brother: b
Jody: j
brother is three years less than twice jody's age:
b = 2j-3
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j+b = 30 substitute for brother:
j+2j-3 = 30
3j = 33
j = 11
and
b = 2j-3
b = 2(11)-3
b = 19