Question

The temperature of a body first Rises by 18 degrees celsius and then Falls by 21 degree Celsius if its initial temperature was minus 25 degree Celsius then the final temperature of the body is

Answer 1

Answer:

initial temperature = -25

now +18 rises so now temperature is -25+18=-7.

now falls 21 degree so it means -21 +(-7)=-28

so the final temperature is -28 degree

Answer 2

Given:

Initial temperature=-25 degree Celsius

Temperature rises by 18 degree Celsius

Falls by 21 degree Celsius

To find:

Final temperature of the body

Solution:

Suppose ,initial temperature of body

$T_0=-25^{\circ} C$

$T=18^{\circ} C$

$T'=-21^{\circ}$

After rising 18 degree Celsius

The temperature of body=$T_0+T$=-25+18=-7 degree Celsius

After falling 21 degree Celsius

The temperature of bod=$-7-21=-28^{\circ} C$

Hence, the final temperature of body=-28 degree Celsius