Worldwide production of motor vehicles was 3.9 million vehicles in 1946 and 65.4 million in 1987. Of the following, which is closest to the average (arithmetic mean) annual increase, in millions, in worldwide production of motor vehicles during this period?
Choose the correct choice:	A) 0.08	B) 1.0	C) 1.1	D) 1.5	E) 41.8
Change in production of motor vehicles = 65.4 - 3.9= 
<gadget id="calculator">65.4 - 3.9</gadget>
<output>61.5</output>
61.5 million in 41 years (1987 - 1946)   average increase per year= 61.5/41= 
<gadget id="calculator">61.5/41</gadget>
<output>1.5</output>
1.5 million (apporx.)   Answer (1.5)
<result>D</result>
Worldwide production of motor vehicles was 3.9 million vehicles in 1946 and 65.4 million in 1987. Of the following, which is closest to the average (arithmetic mean) annual increase, in millions, in worldwide production of motor vehicles during this period?