Question

Following number line shows the temperature in degree Celsius (^oC) at different places on a particular day:

(a) Observe this number line and write the temperature of the places marked on it.

(b) What is the temperature difference between the hottest and the coldest places among the above?

(c) What is the temperature difference between Lahulspiti and Srinagar?

(d) Can we say temperature of Srinagar and Shimla taken together is less than the temperature at Shimla? Is it also less than the temperature at Srinagar?

Answer 1

(a) The temperature of the places marked on it is:  

Places	Temperature	Places	Temperature
Bangalore	22oC	Srinagar	–2oC
Ooty	14oC	Lahulspiti	–8oC
Shimla	5 oC

(b) The temperature of the hottest place Bangalore = 22^oC The temperature of the coldest place Lahulspiti = –8^oC Difference = 22^oC – (–8^oC) = 22^oC + 8^oC = 30^oC 

(c) The temperature of Srinagar = –2^oC The temperature of Lahulspiti = –8^oC Difference = –2^oC + (–8^oC) = –2^oC –8^oC = 6^oC

(d) The temperature of Srinagar and Shimla = 5^oC + (–2^oC) = 5^oC –2^oC = 3^oC The temperature at Shimla = 5^oC Therefore, 3^oC < 5^oC Thus, temperature of Srinagar and Shimla taken together is less than the temperature at Shimla. Now, Temperature of Srinagar = – 2^oC Therefore, 3^oC > –2^oC No, it is not less than the temperature at Srinagar.