Brad is three times as old as Terri. The sum of their ages is 60. How old is Brad?
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brad is 18 and terri is 6 medal plzzz
@dmcdowell you are expected to provide explanation to your reasoning rather than simply give answer or guess.
im not guessing I done it on a calculator its easy now I garentee its right @Hoslos and okay I wont give out the answer no more
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it's not right brad is 45.
Your answer may be correct or not, but give an explanation whenever possible @dmcdowell .
whatever man @Hoslos
@frebrezze Let Brad be 'B' and let Terry be 'T'.
You basically have 2 equations. For starters, this might tell you to solve simultaneous equation, where
You can use substitution, where you make one of the variables the subject and put it in the other one. The 1. equation already has B as the subject. Hence we put it on 2.
That will be\[3T+T=60\rightarrow4T=60\rightarrow T=15\]
Now, you replace the result from 2. to 1.
That will be \[B=3(15)=45\]