Several sums for different periods at the same SI rate, total interest given: rate

1. A.
   $9\frac{3}{17}\%$
2. B.
   $6\frac{5}{17}\%$
3. C.
   $8\frac{4}{17}\%$
4. D.
   $7\frac{3}{17}\%$

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1. A.
   $12\%$
2. B.
   $13\%$
3. C.
   $10.8\%$
4. D.
   $11\%$

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1. A.
   $10\%$
2. B.
   $12\%$
3. C.
   $15\%$
4. D.
   $17\%$

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