Question

Use the cross multiplication method to find which fraction is/are greater.

• A. $\frac{11}{12}>\frac{12}{13}$
• B. $\frac{11}{12}<\frac{12}{13}$
• C. $\frac{12}{13}>\frac{13}{14}$
• D. $\frac{12}{13}<\frac{13}{14}$

Answer 1

Answer: (B), (D)

$\frac{12}{13}<\frac{13}{14}$

We can compare the unlike fractions using cross multiplication method
Let's compare: $\frac{11}{12}and\frac{12}{13}$
$\therefore 144>132$

Hence, $\frac{11}{12}<\frac{12}{13}$
Option B is correct.

Let's compare: $\frac{12}{13}and\frac{13}{14}$

$\therefore 169>168$

Hence, $\frac{12}{13}<\frac{13}{14}$
Option D is correct.