Professes to sell at cost price but uses a false weight for 1 kg: gain percent

1. A.
   $5.35\%$
2. B.
   $5.26\%$
3. C.
   $5.86\%$
4. D.
   $5.96\%$

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1. A.
   $11.11\%$
2. B.
   $14.94\%$
3. C.
   $15.11\%$
4. D.
   $18.21\%$

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1. A.
   $20\%$
2. B.
   $25\%$
3. C.
   $30\%$
4. D.
   $15\%$

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