Czech crowns

Oldrich has one crown. Peter has five crowns coin, a two crown coin and a one-crown coin. Radek has twenty-crown banknote, ten banknote and five-crown coin. The boys got one fifty-one crown and one crown coin. How can they share the money fairly when they can not change the coins?

Correct answer:

x =  17 Kc

Step-by-step explanation:

$$\begin{gathered} a=50+1=51 \\ x=a/3=51/3=17=17\text{Kc} \\ {O}_1=1 \\ {P}_1=5+2+1=8 \\ {R}_1=20+10+5=35 \end{gathered}$$

Try another example