Math Destoyer Q(s) ...need help

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biostudent101

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hey, for those that have the DAT MATH DESTROYER, i need ur help.

Practice test 1:
q#8 how do u know that u set up the equation like this, 6(.30)/6+x=.2. why is the bottom 6+x rather than 6(.30)+x, despite the fact that it will not give u the right answer?

q#23 do not really understand the question. how did they get 4/5?

q#27 how did they get 30% for the Veg?

q#24 can someone explain how they go about answering the question.

Thanks Guys!
 
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