A group of hardy trekkers started out on a challenging trek. Their number was

Question

less than 100. At night they found a shelter which could just about
accommodate all the trekkers. However, in the shelter there were three-tiered
bunk beds. Only one trekker could sleep on the lowest bunk. The middle tier
had room for double that, and the topmost could accommodate double the
number of sleepers on the middle bunk. Before retiring for the night they
played a game after dividing themselves into teams of five members each. The
enthusiasm of 12 trekkers waned on the second day and they turned back to go
home. That left more than two thirds of the original group and they soldiered
ahead. How many trekkers started from home?

Answer 1

Well that's not good enough for me to come over