A ferry, when empty, travels twice as fast as when it is full. It travels 20 miles south with a cargo, spends 20 minutes for unloading, and returns to its original port empty in a total of 8 hours, what is the ferry when it is empty?

A ferry, when empty, travels twice as fast as when it is full. It travels 20 miles south with a cargo, spends 20 minutes for unloading, and returns to its original port empty in a total of 8 hours, what is the ferry when it is empty?

A 8 mph

B 10 mph

C 12 mph

D 15 mph

Solution

Correct Answer: Option A