Subir claimed to sell his items at only 5% above the cost of production, but used a weight that had 1 kg written on it, though it actually weighed 960 grams. What was the actual profit percentage earned by Subir?

9.375%

                   CP                      SP

cost             100                    105         (5% above)

weight         960                  1000         ( 960 gm instead of 1000 gm)

             —————————————————

                 96000              105000

                   32          :        35 = 3 Profit

                Profit % = 3 × \(\frac{100}{32}\) = 9.375%