I boosted my roommates toons in Ramps at 55.
He didn't have a higher toon to run them.

Pretty much iLV 226 at the time on my pally.
They moved up with me, not sure how far they had to, but I wasn't playing them.
Just basically doing the kills, while he did the looting.
With RAF 55-60, for two sets of teams was an afternoon.
Something like 3 clears for each team.

I got a dinner bought for me, out of it.