Question

The product of two rational numbers is $\frac{42}{35}$ . If one of the number is $\frac{4}{7}$ then find the other rational number.

• A. $\frac{2}{5}$
• B. $\frac{14}{25}$
• C. $\frac{21}{5}$
• D. $\frac{21}{10}$

Answer 1

The correct option is D $\frac{21}{10}$

Let the other number be x.
GIven that,
$\frac{4}{7}\times x=\frac{42}{35}x=\frac{42}{35}\times \frac{7}{4}x=\frac{21}{10}$