Just a guess! Since he was paid $8 less, it is fair to assume the CD was worth $8.
14 is a multiple of 7 and 14, because a factor would be like, 8 and 2 go into 16.
84 kilometers ... 1 hour
7 kilometers ... x hours = ?
If you would like to know how long does the pigeon take to fly 7 kilometers, you can calculate this using the following steps:
84 * x = 1 * 7
84 * x = 7 /84
x = 7/84
x = 1/12 hour
Result: A pigeon can fly 7 kilometers in 1/12 hour.