Question

As you saved Mars, you are now on your way to save Uranus. To open the Gate of your rocket, you need to solve a puzzle
$\text{Divide:}4÷\frac{2}{9}$

• A. 18
• B. 19
• C. 20
• D. 21

Answer 1

The correct option is A 18

We can write 4 as $\frac{4}{1}$

$4÷\frac{2}{9}=\frac{4}{1}÷\frac{2}{9}$

Take a reciprocal of the second fraction and multiply with the first fraction as follows

$\frac{4}{1}÷\frac{2}{9}=\frac{4}{1}\times \frac{9}{2}$

$=\frac{4\times 9}{1\times 2}$

$=\frac{2\times 2\times 9}{1\times 2}$

$=\frac{2\times 9}{1}$

$=18$

Hence, $4÷\frac{2}{9}=18$