What will be the difference between simple interest and compound interest @10% per annum on a sum of Rs. 1000 after 4 years?	Pick one:
A) rs . 31	B) rs . 32.10	C) rs . 40.40	D) rs . 64.10	E) none

Rationale: solution s . i . = rs ( 1000 x 10 x 4 / 100 ) = rs . 400 . c . i . = rs . [ 1000 x ( 1 x 10 / 100 ) 4 - 1000 ] = rs . 464.10 ∴ difference = rs . ( 464.10 - 400 ) = rs . 64.10 answer d
Answer: D