Question

Solve the following problems using the unitary method:

$45$ apples can be packed in $9$ boxes. How many boxes will be needed for $105$ apples?

Answer 1

Step 1: Finding number of apples in 1 box

In $9$ boxes $45$ apple can be packed

So, in $1$ box, number of apples$=\frac{45}{9}=5$

Step 2: Finding number of boxes needed for 105 apples

Number of boxes need for $105$ apples $=\frac{\mathrm{Number}\mathrm{of}\mathrm{apples}}{\mathrm{Number}\mathrm{of}\mathrm{apples}\mathrm{in}1\mathrm{box}}$

$$\begin{gathered} =\frac{105}{5} \\ =21 \end{gathered}$$

Hence, the number of boxes needed for $105$ apples is $21$