An investment of $64,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and the third 9%. Total interest from the investments was $5,160. The interest from the first investment was 6 times the interest from the second.Find the amounts of the three parts of the investment.

a) What is the amount of the first part of the investment? $

b) What is the amount of the second part of the investment? $

c) What is the amount of the third part of the investment? $