If the average cost of a house was $50,000 in 1960 and was x in 2005, what was the average increase in home prices per year over this period?  Choose the most appropriate option: A) A)(x+50,000)/40 B) E)x/40 C) C)(50,000/40)+x D) D)(50,000-x)/40 E) B)(x-50,000)/45
Average house price in 2005: x   Average house price in 1965: 50,000   2005-1960= 
<gadget id="calculator">2005-1960</gadget>
<output>45</output>
45   Average increase per year: (x-50,000)/45   Answer is B)x/40
<result>E</result>
If the average cost of a house was $50,000 in 1960 and was x in 2005, what was the average increase in home prices per year over this period?