solve the following word problem. use x for the unknown value. the average cost of a car in 2013 is said to be 5 less than twice the cost of a car in 2009. if the average cost of a car in 2013 is $25,000. how much was the average cost of a car in 2009?
Let the average cost of car in 2009 be $x, then the average cost of a car in 2013 is 2x - 5 25,000 = 2x - 5 2x = 25,000 + 5 = 25,005 x = 25,005/2 = $12,502.50
