Question
At a shop, dining chairs were sold at a price as shown:

Usual price of one dining chair: $40

Oscar bought some dining chairs at a discount of 20%. He paid $224 in total. How many dining chairs did he buy?
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At a shop, dining chairs were sold at a price as shown:

Usual price of one dining chair: $40

Oscar bought some dining chairs at a discount of 20%. He paid $224 in total. How many dining chairs did he buy?