Cost reduction

Two MP3 players whose price was equal to originally have been discounted the first by 20%, the second by 35%. After the price reduction was the difference in their prices 750, - CZK. What was the original price of each of the two players?


a =  5000 Kc


a*(1-20/100)-a*(1-35/100) = 750

15a = 75000

a = 5000

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