A sum of Rs. 12,000 was taken at simple interest at some rate. After four months, Rs. 6,000 more was added and the total principal was charged at double the earlier rate of interest. At the end of the year, if the total interest was Rs. 2,800, what was the initial rate of interest?

A sum of Rs. 12,000 was taken at simple interest at some rate. After f

1.	A sum of Rs. 12,000 was taken at simple interest at some rate. After four months, Rs. 6,000 more was added and the total principal was charged at double the earlier rate of interest. At the end of the year, if the total interest was Rs. 2,800, what was the initial rate of interest?
A.	12%
B.	10%
C.	14%
D.	16%
Answer» C. 14%

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A sum of Rs. 12,000 was taken at simple interest at some rate. After four months, Rs. 6,000 more was added and the total principal was charged at double the earlier rate of interest. At the end of the year, if the total interest was Rs. 2,800, what was the initial rate of interest?

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