Question:The difference between the interest received from two different banks on Rs.`500` for `2` years,is Rs.`2.50`.The difference between their rates is : 

A `1%` 
B `0.5%` 
C `0.25%` 
D `2.5%` 

+ Answer
C 

+ Explanation
`(500 xx R^1 xx 2)/100 - (500 xx R^2 xx 2)/100`

`= 2.50`

`or 1000(R^1 - R^2) = 250`

`or R^1 - R^2 = 250/1000`

`= 1/4 = 0.25%`

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Irin Moni

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