How would we know...
By using the highest level spell you can. Higher level spells give more experience.
Pyramid Plunder which gets REALLY quick at level 81/91.
level 138. there is no higher level on runescape (for players)
The player with a level 59 on runescape s nike26912
If you are a level 100+ it is really very simple. Go do barrows.
experience isn't really spent it's more eaned and as you earn it you increase in level.
Mudskippers are level 30 and 31 on Runescape. The smaller ones are level 30 and the larger ones are level 31.
Unfortunately, you can't get horses in RuneScape.
By fighting. That will increase your levels in different skills, which will in turn affect your combat level. Note that the higher you are, the slower it will be to advance.
He is level 81.
That really depends on your slayer level, as well as on your combat level. The higher-level slayer masters will give you more difficult monsters to slay.
You need level 30 mining to mine Coal in Runescape.