A dealer marks his goods at 35% above the cost price and allows a discount of 20% on the marked price.
Question:
A dealer marks his goods at 35% above the cost price and allows a discount of 20% on the marked price. Find the gain or loss per cent.
Solution:
Let Rs 100 be the CP.
Then, marked price $=R s 135$
Discount $=20 \%$ of $\mathrm{MP}$
$=\frac{20}{100} \times 135$
$=27$
Selling price = marked price − discount
= 135 − 27
= Rs 108
Now, gain = SP − CP
=108 − 100
=Rs 8
$\therefore$ Gain percentage $=\frac{\text { gain }}{\mathrm{CP}} \times 100$
$=\frac{8}{100} \times 100$
$=8 \%$