Question:A man buys a watch for Rs. `1950` in cash and sells it for Rs.`9560` a credit of `1` year. If the rate of interest is `10%` per annum, the man : 

A gains `Rs. 55` 
B gains `Rs. 50` 
C gains `Rs. 30` 
D gains`Rs. 30` 

+ Answer
B 

+ Explanation
S.P. = p.w. of `Rs. 2200` due `1` year hence

`= Rs. [(200 xx 100)/(100 + (10 xx 1))]`

`= Rs. 2000.`

:. Gain `= Rs. (2000 - 1950)`

`= Rs. 50.`

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Irin Moni

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