This depends on several factors: whether you are a free player or a member, and if you want to train all of your combat skills. My guess would be an average of about six months, but this wouldn't be a "pure" account.
hmm i would say if you kept your mid on it and didnt take breaks and if your mining level was from around 30-50 it would take 4 to 5 hours
It can take anywhere between 15-20 secs but it may take up to 30 if their is alot of people on the server
Training on coal at seers coal mine is probably the best way to get it faster.
It depends how long you are on Runescape.
1000 billion / 4.5 billion = 1000/4.5 = 222.22... years.
A long time
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Not that long, it's almost instant.
Go to:runescpae
about 30sec or 1min
well if you played runescape 24/7 it would take probealy take 2-3 days to do .
millions of years
If you just started RuneScape maybe 30 minutes and if you already have a RuneScape account 7 minutes minimum.
depends on what your cooking