Answer:
a) [tex]x = \frac{11}{3}\,\frac{min}{mi}[/tex], b) [tex]y = \frac{77}{15}\,\frac{min}{mi}[/tex]
Step-by-step explanation:
a) The indicator is equal to the ratio of total time to travelled distance:
Alex
[tex]x = \frac{55\,min}{15\,mi}[/tex]
[tex]x = \frac{11}{3}\,\frac{min}{mi}[/tex]
b) In the case of Josh, the ratio must be greater than x. Then:
[tex]y = \frac{77\,min}{15\,mi}[/tex]
[tex]y = \frac{77}{15}\,\frac{min}{mi}[/tex]
