Jen has two ropes. The blue rope is 13 1/8] feet long and the green rope is 21 3/4 feet long. Calculate how much longer the green rope is than the blue rope.

To solve the problem, we need to subtract the length of the blue rope from the length of the green rope:

Green rope - Blue rope

= (21 3/4) - (13 1/8) [convert fractions to a common denominator, which is 8]

= (21 x 8 + 3) / 8 - (13 x 8 + 1) / 8

= 174/8 - 105/8

= 69/8

= 8 5/8

Therefore, the green rope is 8 5/8 feet longer than the blue rope.