The present worth of $3600 due in 2 years at 20% per annum compound interest is?  Choices:	A) $ 1200	B) $ 1850	C) $ 2010	D) $ 3200	E) $ 2500

Rationale: present worth = 3600 / ( 1 + 20 / 100 ) ^ 2 = 3600 * 5 / 6 * 5 / 6 = $ 2500 answer is e
Answer: E