Question

By selling $100$ biscuit packets, a shopkeeper makes a profit equivalent to the selling price of $40$ biscuit packets. Find his gain percent.

Answer 1

Let $S.P$ of $1$ biscuit packet be $1Rs.$

So $S.P$ of $100$ biscuit packets be $100Rs.$

he gained $SP$ of $40$ biscuit packets $=40Rs.$

$C.P=S.P-Profit$

$C.P=100-40=60Rs.$

Profit percent =

$Profit/C.P\times 100$

$=\frac{40}{60}\times 100$

$=66.6\%$