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$5,000or$10,000. If the partnership raised$420,000, then how many investors contributed$5,000and how many contributed$10,000?

x=$5,000investorsy=$10,000investor