Question

A mam buys toffees at $10$ for $Rs3$ and sells them at $8$ for $Rss3$, find his gain per cent.

Answer 1

The Cost price of $10$ toffees$=Rs.3$

The Cost price of $1$ toffees$=\frac{Rs.3}{10}=Rs.0.30$

The Selling price of $8$ toffees$=Rs.3$

The Selling price of $1$ toffees$=\frac{Rs.3}{8}=Rs.0.375$

$Gain=Sellingprice-costprice=0.375-0.3=Rs.0.075$

$Gainpercentage=\frac{gain}{costprice}\times 100=\frac{0.075}{0.3}\times 100=25\%$