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So, I've been stuck in these for quite some time.... can someone help me?
Which ratios can form a proportion? A) 9/45 , 8/40 B) 8/12 , 12/21 C) 8/12 , 12/15 D) 9/22 , 14/28 I think it might be C but my brain is fried. Thank you so much, Jacob

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yashddsy26
it's A ....just divide numerator and denominator of the both and see which is equal.....and it's A