A present value of a machine is $700. Its value depletion rate is 10% per annum then find the machine value after 2 years?	Select
A) $ 900
B) $ 810
C) $ 915
D) $ 715
E) $ 567

Rationale: "p = $ 700 r = 10 % t = 2 years machine value after 2 years = p [ ( 1 - r / 100 ) ^ t ] = 700 * 9 / 10 * 9 / 10 = $ 567 answer is e"
Answer: E