Question:The difference between simple interest and compound interest on Rs.`1200` for one year at `10%` per annum, reckoned half - yearly is : 

A Nill 
B `Rs. 13.20` 
C `Rs. 8.80` 
D `Rs. 3` 

+ Answer
D 

+ Explanation
S.I.`= Rs. ((1200 xx 10 xx 1)/100)`

`= Rs. 120`.

C.I.`= Rs.[1200 xx (1 + 5/100)^2 - 1200]`

`= Rs. 123`

:. (C.I.) - (S.I.)`= Rs. (123 - 120)`

`= Rs. 3`.

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Irin Moni

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