A sum fetched a total simple interest of $4196.25 at the rate of 9 p.c.p.a. in 5 years. What is the sum? Pick one
A) $ 8829	B) $ 2840	C) $ 6578	D) $ 7782	E) $ 8929

Rationale: "e 8929 principal = $ 100 x 4196.25 / 9 x 5 = $ 419625 / 45 = $ 8929 ."
Answer: E