The mean temperature for the first 4 days in january was -2°c. the mean temperature for the first 5 days in january was -3°c. what was the temperature on the 5th day?

We are told that the mean temperature for the first 4 days in January was -2°C. The mean temperature for the first 5 days in January was -3°C.

Now we will find sum of temperatures on first four days of January by multiplying 4 by -2.  

Now let us find sum of temperature on first 5 days of January.

Now we will subtract -8 from -15 to find temperature on the 5th day of January.

Therefore, temperature on the 5th day of January was

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