College

Determine whether each ratio or rate is proportional. Explain your reasoning and write the proportion.

1. 15 out of 20 students are girls.
2. 105 out of 160 students are girls.

Answer :

Find the ratio given in each situation, if it is not the same, then the ratios are not proportional:

[tex]\frac{20}{15}=\frac{4}{3}=1.25[/tex][tex]\frac{160}{105}=\frac{32}{21}=1.52[/tex]

These ratios are not equal, which means that they are not proportional.

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