Snack

CZK 450 was paid for a snack for 30 pupils. How many CZK will we pay for the same snack for 28 pupils?

Correct answer:

x =  420 Kc

Step-by-step explanation:

$$\begin{gathered} s=450\mathrm{/}30=15 \\ x=28\cdot s=28\cdot 15=420\text{ Kc} \end{gathered}$$

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