Question

Read the adjacent bar graph and answer the questions that follow:

How many students were added in the year $2009$?

Answer 1

From the graph, we can calculate the number of students in the year of $2008$ as $40$ since the corresponding bar touches the line which represents $40$ students.

Similarly, we can identify the number of students for $2009$ as $50$.

So, to find how many more students are added in the year $2009$, we need to take the difference between the number of students in $2009$ and $2008$

i.e., $numberofstudentsadded=numberofstudentsin2009-numberofstudentsin2008$

$$\begin{gathered} \Rightarrow 50-40 \\ \Rightarrow 10 \end{gathered}$$

Hence, $10$ students were added in $2009$.