Four brothers Adam, Bill, Charles and David together contributed certain amount of money and purchased a car. The contribution made by Adam is half that of the total contribution made by the other three brothers, contribution made by Bill is one-fourth of the total contribution made by the other three brothers and the contribution made by Charles is two-third of the total contribution made by the other three brothers. If the total price of the car is $9300, find the contribution made by David.
Choose the most appropriate option.
A) $540	B) $580	C) $600	D) $620	E) $650
Given that A:(B+C+D)= 1:2.   Hence A contributed 1/3rd of the total price.   Given B:(A+C+D)=1:4   Hence B contributed 1/5th of the total price.   Given C:(A+B+D)=2:3   Hence C contributed 2/5th of the total price.   Thus the contribution made by A,B and C= 1/3+1/5+2/5=14/15   So, the remaining 1/15th of the price is contributed by David.   Hence David's contribution= 1/15×9300=$620.   The answer is $620.
<result>D</result>
Four brothers Adam, Bill, Charles and David together contributed certain amount of money and purchased a car. The contribution made by Adam is half that of the total contribution made by the other three brothers, contribution made by Bill is one-fourth of the total contribution made by the other three brothers and the contribution made by Charles is two-third of the total contribution made by the other three brothers. If the total price of the car is $9300, find the contribution made by David.