Determine which pair of ratios form a proportion. A. 10/12,20/32 B.3/7,10/21 c. 4/10,6/15 d 7/9,24/27

Question

Determine which pair of ratios form a proportion.                                            A. 10/12,20/32                                               B.3/7,10/21                                               c. 4/10,6/15                                        d 7/9,24/27

mathmale · Answer

One way of doing this would be to reduce each pair of ratios as much as possible.  For example, in the first answer choice< 10/12 reduces to 5/6, and 20/32 reduces to 5/8.  Since the ratio 5/6 and the ratio 5/8 are not the same, the first pair of ratios does NOT form a proportion.

Do the same thing with the other three answer choices.