Answer:
the number of kilometers hiked in all is [tex]\frac{29}{21}[/tex]
Step-by-step explanation:
The computation of the number of kilometers hiked in all is shown below:
= Erwin + Jericho
[tex]= \frac{5}{7} + \frac{2}{3}\\\\= \frac{15 + 14}{21} \\\\= \frac{29}{21}[/tex]
Hence, the number of kilometers hiked in all is [tex]\frac{29}{21}[/tex]
