Answer:
Option C
10 miles
Step-by-step explanation:
We're given that [tex]\frac {m}{15-5}=\frac {m}{15+5}+0.5[/tex] and the first thing will be to simply the denominators since 15-5=10 and 15+5=20 then the above equation is written as [tex]\frac {m}{10}=\frac {m}{20}+0.5[/tex]
Bringing like terms together then
[tex]\frac {m}{10}-\frac {m}{20}=0.5[/tex]
Simplifying then
[tex]\frac {m}{20}=0.5[/tex]
By cross multiplication then m=0.5*20=10
Therefore, m=10 miles