Xan and Katie are twins. Xan weighs 6666 pounds 9999 ounces, and Katie weighs 8888 pounds 1111 ounce. What is the difference, in ounces, between Xan and Katie's weight?

26,664 ounces.

Step-by-step explanation:

First, we need to transform all magnitudes in ounces units.

6666 pounds equals 106656 ounces. So, Xan weighs 116,655 ounces

(Since that, 106656 + 9999 = 116, 655).

8888 pounds equals 142208 ounces. So, Katie weighs 143,319 ounces.

(Since that, 142208 + 1111 = 143,319).

Then, we can subtract both weights, because they have same units:

Katie weigh - Xan weigh = (143,319 - 116, 655) ounces = 26,664 ounces.

Therefore, the difference between them is 26,664 ounces.