Question

In which city is the number of people watching TV the same as the number of people reading newspapers?

a). Mumbai
b). Delhi
c). Kolkata
d). Patna

Answer 1

Hint: To solve the above question we will use the concept of double graph. We can see from the above graph the x-axis represents different cities and for each city we are given two pieces of information : first is number of people reading newspapers and second is the number of people watching TV and y-axis represents the number of people. So, to find the city in which the number of people watching TV is the same as the number of people reading newspapers, we will first tabulate the above data and then find the answer.

Complete step by step answer:
We can see that the bar graph given in the question is a double bar graph which represents the data of number of people reading newspapers and number of people watching TV in a particular city. The blue bar represents the number of people in a particular city who reads newspapers and the black bar represents the number of people who watches TV in a particular city.
And, on the x-axis we are given different cities and the y-axis represents the number of people reading newspapers or watching TV.
So, after analysing the given double bar graph we can say that in Mumbai the total number of people reading newspapers is 10 and the total number of people watching TV is 20.
Similarly, for city Delhi we can say that the total number of people reading newspapers is 20 and total number of people watching TV is 30.
Similarly, for Kolkata we can say that the total number of people reading newspapers is 30 and the total number of people watching TV is 30.
Similarly, for the city Chennai we can say that the total number of people reading newspapers is 30 and the total number of people watching TV is 40.
Similarly, for the city Patna we can say that the total number of people reading newspapers is 40 and the total number of people watching TV is 20.
Now, we will draw the table of the above data among cities, number of people reading newspapers and number of people watching TV.
Now, after tabulating the above data we will get the following table:

Cities	Mumbai	Delhi	Kolkata	Chennai	Patna
Number of people reading newspaper	10	20	30	30	40
Number of people watching TV	20	30	30	40	20

So, from the table we see that for Kolkata the number of people reading newspapers is equal to the number of people watching TV which is equal to 30.
Hence, Kolkata is our correct answer.

So, the correct answer is “Option C”.

Note: It is not necessary to draw the table and write the values for each city. Since, we have been asked to find the city where the number of people watching TV is the same as the number of people reading the newspaper, we can easily identify from the graph that Kolkata has both the bars in the same level, so that will be the answer.
In double bar graph students are required to note that there are two bars and each bar represents a specific type of information about a particular item. Similarly, we can have a multi-bar graph in which multiple bars represent multiple information about a particular item in a single graph. Our question is a double bar graph. An example for a multi bar graph - We want to create a graph which represents population growth (in millions) for 5 different countries in 5 different years. Then, we will use a multi graph here to represent them on a single graph.