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Mathematics 9 Online
OpenStudy (anonymous):

Tyler is three-fourths of his brother's age. The sum of their ages is 21. How old is Tyler? a.9 b.12 c.16 d.28

OpenStudy (anonymous):

@KaiserTheSlayer

OpenStudy (kaisertheslayer):

it would be A. 9

OpenStudy (kaisertheslayer):

i dont know how to explain... sorry

OpenStudy (anonymous):

Only answer if you can explain

OpenStudy (anonymous):

the answer is A. If you take 9 and subtract it from 21 you will receive 12 9 is three-fourth of 12

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