Question

The mean temperature for the first 7 days in January was 3 °C.

The temperature on the 8th day was 7 °C.
What is the mean temperature for the first 8 days in January?

Answer 1

3.5⁰ C is the mean temperature for the first 8 days in January.

Answer 2

3.5 °C

Explanation:

• To find the answer multiply 3 and 7 to get the sum of the temperatures in the first seven days.

3 x 7 = 21

• Add 21 and 8 together to get the sum of the temperatures in the first 8 days.

21 + 8 =29

• Divide 29 by 8 to get the mean temperature for the first eight days.

29 ÷ 8 = 3.5

3.5 °C