In order to promote sales, the boss of the clothing store came up with a "smart move": increase the clothing price by 20% before the Spring Festival, and then reduce the price by 20% near the Spring Festival. A discount sale really attracted many customers. At the end of the day, the boss found that the payment for goods was much less than before. The boss wondered: the price increase and price decrease are both 20%, which should be the same as the original price! How can it be sold less than the original price?

In order to promote sales, the boss of the clothing store came up with a "smart move": increase the clothing price by 20% before the Spring Festival, and then reduce the price by 20% near the Spring Festival. A discount sale really attracted many customers. At the end of the day, the boss found that the payment for goods was much less than before. The boss wondered: the price increase and price decrease are both 20%, which should be the same as the original price! How can it be sold less than the original price?

Suppose that the original unit price is a yuan, the unit price after price increase is a × (1 + 20%) = 1.2A, the unit price after price decrease by 20% is 1.2A × (1-20%) = 0.96a, ∵ a > 0.96a, the payment for goods is much less than the original

In order to promote sales, the boss of the clothing store came up with a "smart move": increase the clothing price by 20% before the Spring Festival, and then reduce the price by 20% near the Spring Festival. A discount sale really attracted many customers. At the end of the day, the boss found that the payment for goods was much less than before. The boss wondered: the price increase and price decrease are both 20%, which should be the same as the original price! How can it be sold less than the original price?

Suppose that the original unit price is a yuan, the unit price after price increase is a × (1 + 20%) = 1.2A, the unit price after price decrease by 20% is 1.2A × (1-20%) = 0.96a, ∵ a > 0.96a, the payment for goods is much less than the original

A computer, the original price of 3840 yuan per unit, due to the arrival of the Spring Festival, now manufacturers are engaged in promotional activities, plan to reduce the price by 25% each time
A computer, the original price of 3840 yuan per unit, due to the arrival of the Spring Festival, now manufacturers engaged in promotional activities, plans to reduce the price by 25% each time
Q: how to find the functional relationship between the price of each computer y yuan and the times of price reduction x?

The functional relationship between the price of each computer y yuan and the times of price reduction x is
y=3840(1-25%)^x

In the Spring Festival, a color TV store launched a sales promotion campaign to reduce the price of a certain brand of color TV set by 200 yuan. Now the price of this kind of TV set is 1800 yuan. What percentage of the price reduction?

200 (1800 + 200) = 200 (2000) = 10%. A: 10% reduction