Take the data giving the minimum and the maximum temperature of various cities given in the beginning of this Chapter. Plot a double bat graph using the data and answer the following: (i) Which city has the largest difference in the minimum and maximum temperature on the given data? (ii) Which is the hottest city and which is the coldest city? (iii) Name two cities where maximum temperature of one was less than the minimum temperature of the order. (iv) Name the city which has the least difference between its minimum and the maximum temperature.

(i) Jammu has the largest difference in temperature i.e.,
Maximum temperature = 41°C and
Minimum temperature = 26°C.
 Difference = 41°C – 26°C = 15°C
(ii) Jammu is the hottest city due to maximum temperature is high and Bangalore
is the coldest city due to maximum temperature is low.
(iii) Maximum temperature of Bangalore is 28°C
Minimum temperature of two cities whose minimum temperature is higher
than the maximum temperature of Bangalore are Ahemedabad and Jaipur
where the minimum temperature is 29°C
(iv) Mumbai has the least difference in temperature i.e.,
Maximum temperature = 32°C and
Minimum temperature = 27°C
∴ Difference = 32°C – 27°C = 5°C

Class 7 Maths Chapter 3 Exercise 3.3

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