Following number line shows the temperature in degree celsius$(^{\circ}\ C)$ 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?
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Given:
The number line shows the temperature in degree celsius$(^{\circ}\ C)$ at different places on a particular day.
To do:
We have to answer the given questions.
Solution:
(a) From the given number line, we can observe that,
Temperature at Bengaluru is $22^{\circ}C$
Temperature at Ooty is $14^{\circ}C$
Temperature at Shimla is $5^{\circ}C$
Temperature at Srinagar is $-2^{\circ}C$
Temperature at Lahulspiti is $-8^{\circ}C$
(b) The temperature at the hottest place(Bengaluru) is $22^{\circ}C$
The temperature at the coldest place(Lahulspiti) is $-8^{\circ}C$
The temperature difference between the hottest and the coldest places $=22^{\circ}C-(-8^{\circ}C)$
$=22^{\circ}C+8^{\circ}C$
$=30^{\circ}C$
(c) Temperature at Lahulspiti is $-8^{\circ}C$.
Temperature at Srinagar is $-2^{\circ}C$.
This implies,
The temperature difference between Lahulspiti and Srinagar $=-2^{\circ}C-(-8^{\circ}C)$
$=-2^{\circ}C+8^{\circ}C$
$=10^{\circ}C$
(d) The temperature at Srinagar $=-2^{\circ}C$
The temperature at Shimla $=5^{\circ}C$
The temperature of Srinagar and Shimla taken together $= -2^{\circ}C +5^{\circ}C$
$= 3^{\circ}C$
Here,
$5^{\circ}C>3^{\circ}C$
Therefore, the temperature of Srinagar and Shimla taken together is less than the temperature at Shimla.
Also,
$3^{\circ}C>-2^{\circ}C$
Therefore, the temperature of Srinagar and Shimla taken together is not less than the temperature of Srinagar.
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