Problem : Madanlal bought 8 almirahs each at Rs 1200 and sold them all at Rs 1400 each. What was the percentage of his profit or loss ?
Solution : Cost price of 1 almirah = Rs 1200
∴ Cost price of 8 almirahs = 8 × 1200 = Rs 9600
Selling price of 1 almirah = Rs 1400
∴ Selling price of 8 almirahs = 8 × 1400 = Rs 11200
Since selling price is more than cost price, then there is a profit.
Profit = Selling Price − Cost Price
= 11200 − 9600
= Rs 1600
Let x% be the Madanlal's profit in this transaction. Then,
⇒
⇒x =
∴ Madanlal made a profit of % in this transaction.