Question

$\text{A man bought apples at 10 for Rs. and sold them at Rs. 25 per dozen. Find his gain or loss per cent.}$

Answer 1

$\text{C.P. Of 10 apples , = Rs. 25}\therefore \text{C.P. of 1 apple}=Rs.\frac{25}{10}=Rs.\frac{5}{2}\text{S.P. of 12 apples =Rs.25}\therefore \text{S.P of 1 apple =}Rs.\frac{25}{12}\therefore \text{Loss = C.P - S.P.=}Rs.\frac{5}{2}-Rs.\frac{25}{12}=\frac{30-25}{12}=Rs.\frac{5}{12}Loss\%=\frac{Loss\times 100}{C.P.}\frac{\frac{5}{12}\times 100}{\frac{5}{2}}=\frac{5\times 100\times 2}{12\times 5}=\frac{50}{3}=16\frac{2}{3}\%Ans.$