Question

In 1984 a locally-owned car company sold 2,743 cars. In 2003, the car sales rose to 4,069. What was the average rate of change for the total number of cars sold?

Answer 1

70 cars per year.

Explanation:

Given:

In 1984 a locally-owned car company sold 2,743 cars.

In 2003, the car sales rose to 4,069.

Question asked:

What was the average rate of change for the total number of cars sold?

Solution:

In 2003 number of cars sold = 4069

In 1984 number of cars sold = 2743

Change in the number of car sold = 4069 - 2743

= 1326

Now, time interval between 2003 and 1984 = 19

`The\ average\ rate\ of\ change=(Change\ in\ the\ number\ of\ car\ sold)/(Time \ interval)`

`=(1326)/(19) \\=69.789\\\\=70\ cars\ per\ year\ (approx)`

Thus, the average rate of change for the total number of cars sold is 70 cars per year.