From the information given, in order to find who hikes faster, we need to determine the speed of John and Sara. The person with the greater speed hikes faster.
[tex]\text{ Sp}eed\text{ = }\frac{\text{ Total Distance travelled}}{\text{Time}}[/tex]John's speed is determined by:
[tex]\text{ Sp}eed\text{ = }\frac{20\operatorname{km}}{5\text{hrs}}=\frac{4km}{hr}[/tex]Sara's speed is determined by:
[tex]S\text{peed =}\frac{25\operatorname{km}}{5}=\frac{5\operatorname{km}}{hr}[/tex]Since Sara's speed is greater than John's speed
Therefore, Sara hikes faster than John
