A commodity is priced at 20% profit, and then sold at a 20% discount, resulting in a loss of 64 yuan. What is the cost price of this commodity?

A commodity is priced at 20% profit, and then sold at a 20% discount, resulting in a loss of 64 yuan. What is the cost price of this commodity?

64 △ 1 - (1 + 20%) * 80%) = 64 △ 0.04 = 1600 yuan