Question

Which of the following rational numbers is equivalent to the number 5/7?

• A. 10/27
• B. 345/487
• C. 5/14
• D. 20/28

Answer 1

The correct option is D 20/28

If the numerator and denominator of a rational number are multiplied or divided by the same value, then the resulting number is an equivalent number of the starting number.
The number $\frac{5}{7}$ can be written as
$\frac{5}{7}=\frac{5\times 4}{7\times 4}=\frac{20}{28}$.
Hence, $\frac{20}{28}$ is equivalent to $\frac{5}{7}$.