Motion Problem - Airplane
Algebra
In robols space, a robols aircraft is able to travel a distance of $1,000$ km in $10$ hours when traveling headwind. The same aircraft can travel the same distance in only $8$ hours when traveling tailwind. What is the speed (in kilometers per hour) of the aircraft in still air?
A$100$
B$112.5$
C$122.5$
D$125$