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Which pair of ratios does not form a true proportion?

A) 6:16 and 21:56
B) 2 to 10 and 15 to 75
C) 19/11 = 27/15
D) y = 5x

1 answer

6/16 = 2*3 / 2*8 = 3/8
21/56 = 7*3 / 7*8 = 3/8
so, A is a proportion

check the others in like wise
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