Question

Question 13

Find the missing number in the box in each of the proportions:

$\frac{8}{\square }=\frac{3.2}{4}$

Answer 1

We have,
$\frac{8}{?}=\frac{3.2}{4}$
$\Rightarrow \frac{8}{?}=\frac{3.2\times 2.5}{4\times 2.5}$ [Multiplying numerator and denominator by 2.5 to make numerator of both the ratios same]
$\Rightarrow \frac{8}{?}=\frac{8}{10}$
On comparing, we get, ? = 10