If the ratio of the domestic sale price of a commercial vehicle, a passenger vehicle, and a three wheeler is 5 : 3 : 2 then what percent of earnings (approximately) is contributed by commercial vehicle segment to the overall earnings from domestic sales during the period 2004-2008?

Total commercial vehicles sold from the year 2004 to 2008 = 450+500+625+600+550 = 2725

Total passenger vehicles sold from the year 2004 to 2008 = 700+675+900+1050+975 = 4300

Total three wheelers sold from the year 2004 to 2008 = 300+350+400+375+350 = 1775

Hence, the percent of earnings is contributed by commercial vehicle segment alone = $$\dfrac{5*2725}{5*2725+3*4300+2*1775}\times 100$$ = 45.30 % $$\approx$$ 45%.

Hence, option A is the correct answer.