Question:A sum of money at compound interest amounts to Rs.`5290` in `2` years and to Rs.`6083.50` in `3` years. The rate of interest per annum is : 

A `12%` 
B `14%` 
C `15%` 
D `16 2/3%` 

+ Answer
C 

+ Explanation
Interest on Rs.`5290` for `1` years 

`= Rs. (6083.50 - 5290)`

`= Rs.793.50`

`:. Rate = ((100 xx 793.50)/5290)%`

`= 15%`.

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Irin Moni

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