Question

The mean temperature for the first 7 days in January was 6 °C.

The temperature on the 8th day was 10 °C.
What is the mean temperature for the first 8 days in January

Answer 1

`(x + x + x + x + x + x + x)/(7) = 6 \\ (7x)/(7) = 6 \\ x = 6 \\ (6 + 10)/(8) = (16)/(2)`

Explanation:

answer =2