Question

The value of $\frac{1}{5}(\frac{15}{7}-\frac{20}{14})$ is

• A. $\frac{2}{7}$
• B. $\frac{3}{7}$
• C. $\frac{1}{7}$
• D. $7$

Answer 1

The correct option is C $\frac{1}{7}$

$\frac{1}{5}(\frac{15}{7}-\frac{20}{14})$

$=\frac{1}{5}(\frac{15}{7}-\frac{10}{7})$

$=\frac{1}{5}\times \frac{15}{7}-\frac{1}{5}\times \frac{10}{7}$ ($\because$ distributive property)

$=\frac{3}{7}-\frac{2}{7}$

$=\frac{1}{7}$