Question

jaianna wants to calculate the average daily change in temperature over the last three days. she will use the following information about the temperature changes over the last five days:

• the temperature dropped 2.5 °c consecutively each day for the first two days.
• the total change during the last three days was equivalent to the total change during the first two days.

what is the average daily temperature change over the last three days?
round to the nearest tenth if needed.
the average temperature change over the last three days is

Explanation:

Step1: Calculate total change in first two days

The temperature dropped 2.5°C each day for 2 days. So the total change in the first two days is $2.5\times2 = 5$°C.

Step2: Find average change for last three days

Since the total change during the last three days is the same as the first two - days (5°C), and we want the average daily change for the last three days. We divide the total change by the number of days. The average daily change for the last three days is $\frac{5}{3}\approx1.7$°C.

Answer:

1.7°C