Question

The average temperature for the first four days of a week was 30.5°C and the average temperature of the whole week was 32°C. What was the average temperature during the last three days of the week​

Answer 1

Sum of Temperature of first 4 days =39∗4=156

Now, Sum of Temperature of whole week

=40∗7=280

So, Sum of Temperature of last 3 days is

=280−156=124

So, Average of last temperature is = 124/3

=41.34°