Exercise 22.1
Question 1: The sale of electric bulbs on different days of a week is shown below:
Observe the pictograph and answer the following questions:
(i) How many bulbs were sold on Friday?
(ii) On which day maximum number of bulbs were sold?
(iii) If one bulb was sold at the rate of Rs 10, what was the total earning on Sunday?
(iv) Can you find out the total earning of the week?
(v) If one big carton can hold 9 bulbs. How many cartons were needed in the given week, more than 7, more than 8 or more than 9?
Solution 1:
(i) Total Number of 14 bulbs were sold on Friday.
Because 1 bulb is equal to 2, then 2 × 7 = 14 bulbs
(ii) On Sunday maximum number of bulbs were sold.
On Sunday total no. of bulbs were sold = 9 × 2 = 18 bulbs
(iii) Number of bulb sold on Sunday = 2 × 9 = 18
Given the Cost of one bulb = Rs 10
So, the total earning on Sunday = 10 × 18 = Rs 180.
(iv) Total bulb throughout the week = 6 + 8 + 4 + 5 + 7 + 4 + 9 = 43
So, the total number of bulbs = 43 × 2 = 86
Given the Cost of one bulb = Rs 10
Total earning of the week = 10 × 86 = Rs 860
(v) Total number of bulbs = 86
It is given that one carton can hold 9 bulbs
So for holding 86 bulbs we require = 86 × 9 = 774 cartons
Hence, more than 9 cartons are needed.
Question 2: A survey was carried out in a certain school to find about the different modes of transport used by students to travel to school each day. 30 students of class VI were interviewed and the data obtained was displayed in the form of a pictographs given below:
Look at the above pictograph and answer the following questions:
(i) How many students are using cycle or walking as a mode of travel?
(ii) Which is most popular mode of travel?
Solution 2:
(i) 3 students using cycle as a mode of travel.
8 students using walking as a mode of travel.
So the total number of students using cycle or walking as a mode of travel = 3 + 8 = 11
(ii) 10 students means, Maximum number of students use school bus as a mode of travel.
So, the most popular mode of travel to school is school bus.
Question 3: The number of girl students in each class of co-ed. Middle school is depicted by the following pictograph:
Observe the above pictograph and answer the following questions:
(i) Which class has the maximum number of girl students?
(ii) Is the number of girls in class VI is less than the number of girls in class V?
(iii) How many girls are there in VII class?
Solution 3: According to the above pictograph, firstly we can prepare the chart to find the number of girl students in each class.
Let one icon show’s 4 girls
(i) Class I has the maximum number of girl students.
(ii) Number of girls in Class VI = 16
Number of girls in Class V = 10
No, the number of girls in class VI is not less than the number of girls in class V.
(iii) In class VII Number of girls are 12.
Question 4: In a village six fruit merchants sold the following number of fruit baskets in particular season:
Observe the above pictograph and answer the following questions.
(i) Which merchant sold the maximum number of baskets?
(ii) How many fruit baskets were sold by Anwar?
(iii) The merchants who have sold 600 or more number of baskets are planning to buy a godown for the next season. Can you name them?
Solution 4: According to the above pictograph, we can prepare a chart to find the maximum number of fruit baskets sold by each merchant.
Let one icon show’s 100 fruit baskets
(i) Martin has sold 950 baskets of fruit, it is the maximum number of fruit baskets.
(ii) 700 fruit baskets were sold by Anwar.
(iii) Anwar has sold 700 fruit baskets, Martin has sold 950 fruit baskets and Ranjit singh has sold 800 fruit baskets.
Hence, Anwar, Martin and Ranjit Singh are planning to buy a godown for the next season.
Question 5: The pictograph shows different subject books which are kept in a library.
(i) How many English books are there in the library?
(ii) How many Maths books are there?
(iii) Which books are maximum in number?
(iv) Which books are minimum in number?
Solution 5: According to the above pictograph we can prepare the chart to find the number of books present in the library:
(i) There are 800 English books in the library.
(ii) There are 250 Math books in the library.
(iii) English books are maximum in number.
(iv) History books are minimum in number.
Exercise 22.2
Question 1: The following are the details or the number of students in a class of 30 students present during a week.
Represent the above data by a pictograph.
Solution 1:
If we consider that one icon of a student shows 4 students. So, the number of icons for each day is given below :
Question 2: Total number of students of a school in different years is shown in the following table:
Represent the above data by a pictograph.
(a) Prepare a pictograph of students using one symbol an icon of a student to represent 100 students and answer the following questions:
(i) How many symbols represent total number of students in the year 2002?
(ii) How many symbols represent total number of students for the year 1998?
(b) Prepare another pictograph of students using any other symbol each representing 50 students. Which pictograph do you find more informative?
Solution 2:
(a) If we consider that one icon of a student shows 100 students. So, the number of icons for different years is given below:
(i) 6 symbols represent the total number of students in the year 2002.
(ii) 5 ½ symbols represent total number of students in the year 1998.
(a) If we consider that one icon of a student shows 50 students. So, the number of icons for different years is given below:
The more informative pictograph is the second pictograph as every icon of pictograph is complete and more convenient to understand.