A and B undertook to do a piece of work for $4500. A alone could do it in 8 days and B alone in 12 days. With the assistance of C they finished the work in 4 days. Then C's share of the money is:

A, B and C undertake to complete a piece of work for ? 1440. A alone can complete the work in 8 days, B in 12 days and C in 16 days. They complete the work with the help of D in 3 days. What does D get?