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OpenStudy (anonymous):
Deanne is four more than three times older than Ted. The sum of their ages is 60. How old is Ted?
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OpenStudy (nikato):
Let D=Deanne and T=Ted So D=4+3T D+T=60 Use substitution
OpenStudy (nikato):
Subtract T on both sides in the second equation and get D=60-T Substitute this into the first equation and get 60-T=4+3T Now solve for T
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