Leo hiked

Leo hiked 6/7 of a kilometer. Jericho hiked 2/3 kilometer. Who covered a longer distance? How much longer?

Correct result:

x =  0.1905 km

Solution:

$$\begin{gathered} L={\displaystyle \frac{6}{7}}\doteq 0.8571\text{ km } \\ J={\displaystyle \frac{2}{3}}\doteq 0.6667\text{ km } \\ L>J \\ x=L-J=0.8571-0.6667={\displaystyle \frac{4}{21}}=0.1905\text{ km} \end{gathered}$$

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