Question

Temperature of surrounding air is 20 degrees. the temperature of a hot body reduces from 100 to 70 in 1 hour. find temperature of the body after 2 hours. (temparature - celsius)

Answer 1

Answer:

temperature of a hot body= 60°C

Step-by-step explanation:

temperature of hot body in hour = 100°C- 70°C=30°C

Temperature of hot body after 2 hours= (30*2)°C=60°C

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Answer 2

Answer:

The temperature of the body after 2 hours is 40°

Step-by-step explanation:

Given:

The temperature of the surroundings = 20°

The temperature of the hot body = 100°

Also, The temperature of the hot body reduces in 1 hour = 70°

To find:

The temperature of the body after 2 hours

Solution:

We know,

The temperature of the body reduces after 1 hour is 30°

as, 100° - 70° = 30°

So, The temperature of the body reduces in 2 hours is again 30°

∴ New temperature becomes 70° - 30° = 40°

Hence, The temperature of the body after 2 years is 40°.

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