Question

The mean temperature for the first 4 days in January was 4°C.

The mean temperature for the first 5 days in January was 5°C.

What was the temperature on the 5th day?

Answer 1

9°C

Explanation:

Total temperature= mean * number of days

Total for 4 days=4°C * 4days=16°C

Total for 5 days=5°C * 5days=25°C

Temperature for 5th day =25-16

=9°C