Correct answer: B
Explanation
% increase of vehicles produced by ford btw 2007 and 2008
= (35,000 -30,000)/30,000 x 100 = 16.7 %
If this is repeated annually, then a year later , we have (1 + 0.167)(35,000) = 40,950
2 yrs later = 47,911.5
3 years later = 56,056.5
4 years later = 65,586.1 Ans is 4 years