Product original price

Determine the product's original price, which, after an increase of 20%, costs 90 CZK.

Final Answer:

x =  75 kc

Step-by-step explanation:


x + 0.20x = 90

x + 0.20·x = 90

1.2x = 90


x = 90/1.2 = 75

x = 75

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