I'm a bit confused.. Is this supposed to be asking a question about Combining Like Terms or is it like, telling what it is or something. I'm just clueless lol, It's good if your just telling people what it is if anyone needs help with it though! Not many people do that!
A 100 pound person would weigh 800 pounds on. Jupiter ,the ratio would be 800:500
It is A because 13/13 (=1) and 13/13 - 8/13 = 5/13
Hope this helped :)