Math Problem Statement

Display the missing equivalent part-to-part ratios in this two-column table.

Solution

The table in your image provides a part-to-part ratio with the numbers:

  • First row: 7 : 10
  • Second row: 70 : 100

These represent equivalent ratios since 7/10 is equal to 70/100. The task is to find the set of options that match this equivalent ratio pattern.

To check:

  • 710=70100\frac{7}{10} = \frac{70}{100} simplifies to the ratio 7:107:10, which is constant in both rows.

Now, checking the provided options for matching equivalent ratios:

  1. 13:1013:10 and 45:4245:42:

    • 13/1045/4213/10 \neq 45/42, so this option is incorrect.
  2. 14:2014:20 and 56:8056:80:

    • 14/20=0.714/20 = 0.7 and 56/80=0.756/80 = 0.7, so this option is correct.
  3. 20:1420:14 and 80:5680:56:

    • 20/1480/5620/14 \neq 80/56, so this option is incorrect.
  4. 10:1310:13 and 42:4542:45:

    • 10/1342/4510/13 \neq 42/45, so this option is incorrect.

Thus, the correct answer is 14:20 and 56:80.

Would you like further details on ratio simplification or equivalent ratios?

Related Questions:

  1. How do you simplify a ratio to its simplest form?
  2. What are some real-world applications of equivalent ratios?
  3. How can cross-multiplication help verify equivalent ratios?
  4. Can ratios be used to solve proportion problems in algebra?
  5. How do you convert part-to-part ratios to part-to-whole ratios?

Tip: Always reduce ratios to their simplest form to easily compare equivalency between them.

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Math Problem Analysis

Mathematical Concepts

Ratios
Proportions
Equivalent Ratios

Formulas

Ratio formula: a:b = c:d implies a*d = b*c

Theorems

Proportion theorem
Cross-multiplication rule

Suitable Grade Level

Grades 6-8