Trip cost

In September, the trip cost CZK 12,000. How many crowns did the trip cost in June of the same year, when they have since reduced the price by a quarter and by another CZK 1,200?

Correct result:

x =  17600 Kc

Solution:

$$\begin{gathered} s=12000\text{ Kc } \\ s=x-x\mathrm{/}4-1200 \\ 12000=x-x\mathrm{/}4-1200 \\ 3x=52800 \\ x=17600=17600\text{ Kc} \end{gathered}$$

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