There are four parts to a quarter so you divide 28 by 4:
28/4=7
and then because you want to know three quarters you just times 7 by 3:
7x3=21
therefore three quarters of 28 is 21
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I think 3 if im wrong im sorry.
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I believe it is C because I think 0 is actually not an integer
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hmm I don't remember it now hehe I'm sorry
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