Ali and Felicia analyzed the patterns of equivalent ratios for StartFraction 3 Over 8 EndFraction in the table below.

A multiplication table. In the column labeled 3, the numbers 3, 6, 9, 12, 15, 18, 21, 24, and 27 are highlighted. In the column labeled 8, the numbers 8, 16, 24, 32, 40, 48, 56, 64, and 72 are highlighted.

The table below summarizes the method that each person used to write equivalent ratios for StartFraction 3 Over 8 EndFraction.

Step 1: Step 2: First ratio Step 3: Second ratio
Ali Extend the table to column 16. Pick a row. Write a ratio comparing a number in column 6 to a number in column 16. Pick a different row. Write a ratio comparing a number in column 6 to a number in column 16.
Felicia Extend the table to column 24. Pick a row. Write a ratio comparing a number in column 9 to a number in column 24. Pick a different row. Write a ratio comparing a number in column 9 to a number in column 24.

Which person has a pattern of equivalent ratios for StartFraction 3 Over 8 EndFraction?
Ali only
Felicia only
both Ali and Felicia
neither Ali nor Felicia

1 answer

To determine who has a pattern of equivalent ratios for \( \frac{3}{8} \), let's analyze the methods used by Ali and Felicia.

Ali's Method:

  1. Extend the table to column 16:

    • The equivalent ratios for \( \frac{3}{8} \) can be generated by finding ratios in the form of \( \frac{3n}{8n} \) for any integer \( n \). Since \( 8 \) can be extended to \( 16 \) (by using \( n = 2 \)), Ali can form a ratio \( \frac{3}{8} = \frac{6}{16} \).
  2. Pick a row and write a ratio comparing a number in column 6 to a number in column 16:

    • For example, using \( 6 \) (from column 6) and \( 16 \) (from column 16), the ratio \( \frac{6}{16} \) is equivalent to \( \frac{3}{8} \).
  3. Pick a different row:

    • He could again use \( 12 \) from column 6 with \( 32 \) from column 16 to get \( \frac{12}{32} \), which is also equivalent to \( \frac{3}{8} \).

Felicia's Method:

  1. Extend the table to column 24:

    • Extending to 24 allows \( 8 \) to be considered in a multiplication of \( n = 3 \) (as in \( 8 \times 3 = 24 \)). Therefore, \( \frac{3}{8} = \frac{9}{24} \).
  2. Pick a row and write a ratio comparing a number in column 9 to a number in column 24:

    • Using \( 9 \) from column 9 and \( 24 \) from column 24 gives \( \frac{9}{24} \), which is equivalent to \( \frac{3}{8} \).
  3. Pick a different row:

    • Felicia can take \( 18 \) from column 9 and use \( 48 \) from column 24 to form \( \frac{18}{48} \), which is also \( \frac{3}{8} \).

Conclusion:

Both Ali and Felicia are able to correctly form equivalent ratios for \( \frac{3}{8} \) using their respective methods. Therefore, the answer is:

both Ali and Felicia.