Respuesta :
The rate of increase for these automobiles between the two time periods is 10%
What is automobiles?
Automobile is the wheeled vehicle usually having four wheels and generally used for the transportation purposes. For example :- car, buses, trucks, bike etc.
In the above case, the average cost of the automobile is $12000 in 2009 but now it has increased to $ 13200. For the calculation of the increased rate of the auto mobile following formula is used as follows:-
Increased rate = (current value -Initial value )/current value * 100
=( $13,200 - $12,000)/ $12,000 *100
=$1200/ 12000 *100
= 10%
Therefore, the rate of the increase for these automobile between 2 periods is 10%.
Learn more about increase rate here:
https://brainly.com/question/20820218
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