Question

Oranges are bought at $6$ for Rs.$20$ and sold at $4$ for Rs.$18$. Find the gain or loss per cent.

Answer 1

Given,

$C.P$ of $6$ oranges $=Rs.20$

$C.P$ of $1$ orange $=\frac{20}{6}=Rs.3.333$

$S.P$ of $4$ oranges $=Rs.18$

$S.P$ of $1$ orange $=\frac{18}{4}=Rs.4.5$

Here, $S.P$ is greater than $C.P$, so its gain

Therefore,

Gain $=\frac{S.P-C.P}{C.P}\times 100$

or, Gain $=\frac{4.5-3.33}{3.33}\times 100$

or, Gain $=\frac{1.17}{3.33}\times 100$

or, Gain $=35.135\%$