For this case, what we should do is find Ammar's speed.
We have then:
\(v =\frac{d}{t}
\)
Where,
d: distance
t: time
Then, on the other hand we have:
1 hour = 60 minutes
Substituting values we have:
\(v = \frac{2\frac{3}{4}}{1\frac{15}{60}}\)
Rewriting we have:
\(v= \frac{\frac{11}{4}}{\frac{75}{60}}\)
\(v= \frac{\frac{11}{4}}{\frac{5}{4}}\)
\(v = \frac{11}{5}\)
Answer:
Ammar hikes \(\frac{11}{5}\) miles per hour