A Backhoe Can Dig 175 Metre of Trench Per Hour

Multiple Choice

A backhoe can dig 175 metre of trench per hour and costs $525 per hour to hire and operate. A ditch digger can dig 5 metre of trench per hour. Based on this information, what is the most a ditch digger can charge per hour when digging ditches?

A) $13.33 per hour
B) $25 per hour
C) $15 per hour
D) $23.33 per hour