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OpenStudy (anonymous):
Tammy is 14 years old she has a younger sister and an older brother her sister is 12 years old the mean of all their ages is 14 how old is Tammy brother ?
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OpenStudy (anonymous):
Older brother is 16, multiply 14 (mean) by 3(How many kids) and subtract from 14+12(age of two kids given)
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