Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31

Maharashtra State Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31

Question 1.
The number of saplings planted by schools on World Tree Day is given in the table below. Draw a joint bar graph to show these figures.

School Name\Name of Sapling Almond Karanj Neem Ashok Gulmohar
Nutan Vidyalaya 40 60 72 15 42
Bharat Vidyalaya 42 38 60 25 40

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 1

Question 2.
The table below shows the number of people who had the different juices at a juice bar on a Saturday and a Sunday. Draw a joint bar graph for this data.

Days\Fruits Sweet Lime Orange Apple Pineapple
Saturday 43 30 56 40
Sunday 59 65 78 67

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 2

Question 3.
The following numbers of votes were cast at 5 polling booths during the Gram Panchayat elections. Draw a joint bar graph for this data.

Persons\Booth No. 1 2 3 4 5
Men 200 270 560 820 850
Women 700 240 340 640 470

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 3

Question 4.
The maximum and minimum temperatures of five Indian cities are given in °C. Draw a joint bar graph for this data.

City\Temperature Delhi Mumbai Kolkata Nagpur Kapurthala
Maximum temperature 35 32 37 41 37
Minimum temperature 26 25 26 29 26

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 4

Question 5.
The numbers of children vaccinated in one day at the government hospitals in Solapur and Pune are given in the table. Draw a joint bar graph for this data:

City\Vaccine D.P.T. (Booster) Polio (Booster) Measles Hepatitis
Solapur 65 60 65 63
Pune 89 87 88 86

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 5

Question 6.
The percentage of literate people in the states of Maharashtra and Gujarat are given below. Draw a joint bar graph for this data.

State\Year 1971 1981 1991 2001 2011
Maharashtra 46 57 65 77 83
Gujarat 40 45 61 69 79

Solution:
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 6

Maharashtra Board Class 7 Maths Chapter 7 Joint Bar Graph Practice Set 31 Intext Questions and Activities

Question 1.
Observe the graph shown below and answer the following questions. (Textbook pg. no. 51)

  1. In which year did Ajay and Vijay both produce equal quantities of wheat?
  2. In year 2014, who produced more wheat?
  3. In year 2013, how much wheat did Ajay and Vijay each produce?

Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 7

Solution:

  1. Both produced equal quantities of wheat in the year 2011.
  2. Ajay produced more wheat in the year 2014.
  3. Ajay’s wheat production in 2013 = 40 quintal.
    Vijay’s wheat production in 2013 = 30 quintal.

Question 2.
The minimum and maximum temperature in Pune for five days is given. Read the joint bar graph and answer the questions below: (Textbook pg. no. 52)
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 8

  1. What data is shown on X- axis?
  2. What data is shown on Y- axis?
  3. Which day had the highest temperature?
  4. On which day is the minimum temperature the highest?
  5. On Thursday, what is the difference between the minimum and maximum temperature?
  6. On which day is the difference between the minimum and maximum temperature the greatest?

Solution:

  1. Five days of a week are shown on X – axis.
  2. Temperature in the city of Pune is shown on Y – axis.
  3. Monday had the highest temperature.
  4. The minimum temperature was highest on Wednesday.
  5. Maximum temperature = 29.5° C
    Minimum temperature = 15° C
    ∴ Difference in temperature = 29.5° C – 15° C = 14.5 ° C
  6. The difference in minimum and maximum temperature is greatest on Thursday.

Question 3.
Collect various kinds of graphs from newspapers and discuss them. (Textbook pg. no. 53)
i. Histogram
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 9
ii. Line graph
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 10
iii. Pie chart
Maharashtra Board Class 7 Maths Solutions Chapter 7 Joint Bar Graph Practice Set 31 11
Solution:
(Students should attempt the above activities on their own.)

Maharashtra Board Class 7 Maths Solutions

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