At first, a laptop was sold at a 20% increase in cost. Later, due to market reasons, it was sold at a 15% discount. After the price reduction, each laptop sold for 5100 yuan. Did you lose or make a profit? How much did you lose or make?

At first, a laptop was sold at a 20% increase in cost. Later, due to market reasons, it was sold at a 15% discount. After the price reduction, each laptop sold for 5100 yuan. Did you lose or make a profit? How much did you lose or make?

Let the original price of notebook be X
X=5100÷0.85=6000
Then cost price = 6000 △ 1.2 = 5000
Profit and loss:
5100-5000 = 100 yuan
Sell this kind of notebook computer is to earn, each made 100 yuan