1. A shopping mall asked Xiao Li to price the new shoes. The purchase price of each pair of shoes is 205 yuan, which is sold at a 10% discount, and the profit is 15.2%. What is the price of a pair of shoes for Xiao Li?

2. A store bought 10 pairs of pants at the purchase price of 15 yuan in Guangzhou, and then went to Shenzhen to buy 40 pairs of pants at the purchase price of 12.5 yuan. If these pants are sold at a profit of 12%, what should be the price of each pair of pants?

3. A currency depreciates 12% every year. How much should I add to restore the original value?

1, the price of each pair of shoes is 205× (1+0.152) = 236.16, and the price of each pair of shoes is 236. 16÷0.9=262.4 yuan.

2. The cost is15×10+12.5× 40 = 650, and the price of all pants should be 650×( 1+0. 12)=728 yuan.

The price of each pair of trousers is 728 ÷ (10+40) =14.56 yuan.

3. Let the annual increment be x, then (1+x) × (1-0.12) =1,x =100/88-1=/kloc.