Exchanged 59993

Lukáš and Laco exchanged stamps. Before the exchange, Lukáš had 25 more marks than Laco. After the exchange, he had more Laco marks. At least how many stamps does Laco receive from Lukáš?

Correct answer:

x =  13

Step-by-step explanation:

$$\begin{gathered} x=(25+1)/2=13 \\ \text{ Verifying Solution: } \\ a=50+25=75 \\ b=50 \\ {a}_2=a-x=75-13=62 \\ {b}_2=b+x=50+13=63 \end{gathered}$$

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