Question

Show the following information by a percentage bar graph

Division of standard	A	B	C	D
Number of studentsSecuring grade A	45	33	10	15
Total Number of Students	60	55	40	75

Answer 1

Hint: We will first find out the percentage of each standard who secured the grade A as given in the table, with respect to the total number of students in particular standard. Then we will place the data to make a percentage bar graph.

Complete step-by-step solution:
Moving ahead with the question in step wise method to find out the percentage of each standard who secured grade A with respect to all students in respective standards. So according to the percentage theorem we know that $\dfrac{a}{b}\times 100$ which is equal to the percentage of a with respect to b.
So percentage for standard A is equal to students who secured grade A with respect to total number of students in standard A is equal to $=\dfrac{45}{60}\times 100=75\%$
Similarly percentage for standard B is $=\dfrac{33}{55}\times 100=60\%$
Same percentage for standard C will be $=\dfrac{10}{40}\times 100=25\%$
And for standard D will be $=\dfrac{15}{75}\times 100=20\%$
Now we will make table for this percentage, so we will get;

Division of standard	A	B	C	D
Number of studentsSecuring grade A	45	33	10	15
Total Number of Students	60	55	40	75
percentage	$75\%$	$60\%$	$25\%$	$20\%$

Now place the data, to find out the percentage bar i.e.

Note: Percentage bar is used to compare the data, as in our case to compare the number of students who got grade A compared to total number of students. We can also relate it as remaining students secured other grades which can be B, C, and so on.