Formulate the situation as a system of two linear equations in two variables. Be sure to state clearly the meaning of yourx- andy-variables. Solve the system by the elimination method. Be sure to state your final answer in terms of the original question.

A lawyer has found 60 investors for a limited partnership to purchase an inner-city apartment building, with each contributing either$6,000or$12,000. If the partnership raised$504,000, then how many investors contributed$6,000and how many contributed$12,000?

x	=	$6,000investors
y	=	$12,000investors