Question

A sold a watch to B at 10% loss. B sold it to C at 11.11% loss and c again sold it to A at 12.5% profit. How much profit/loss % is incurred by A?

Answer 1

Let the cost price of watch be $p$

Sale price of A = $\frac{9}{10}p$

Sale Price of B = $\frac{88.89}{100}$ $\times$$\frac{9}{10}p$

Sale Price of Z = $\frac{88.89}{100}$ $\times$ $\frac{9}{10}$ $\times$$\frac{112.5}{100}p$ = $\frac{9}{10}p$ = Purchase price of A

Thus A has incurred no loss or profit