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Intelligent Trader with 3 Sacks and 90 Coconuts

An intelligent trader travels from 1 place to another carrying
3 sacks having 30 coconuts each. No sack can hold more
than 30 coconuts. On the way he passes through 30 checkpoints
and on each checkpoint he has to give 1 coconut for each sack he is carrying. Maximum how many coconuts he can save when he reach last check point.

10 comments:

Hari said...

25

Unknown said...

25
or 26 when "he reach last checkpoint"

Anonymous said...

The first 10 checkpoints require 3 coconuts each, which empties his first sack.
The next 15 checkpoints require 2 coconuts each, exhausting his second sack.
The last 5 take 1 coconut each, so he's left with 25 coconuts.

Great puzzle and great site!

ditriaenglish said...

he leaves 3 coconuts for the first 29 checkpoints, so he only has 3 when he getsd to the last.

Anonymous said...

33

AA said...

44

Le Bunnydog said...

25

Le Bunnydog said...

25

Anonymous said...

29

Anonymous said...

26!
First 10 checkpoints take 3 coconuts each.
Next 15 checkpoints take 2 coconuts each.
Last 5 checkpoints take 1 coconut each.

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