Transporting wax

[Susam Pal]

A skilled artist once made a magnificent wax structure made of two wax
cubes stacked on top of each other. The height of this structure was
equal to the height of the wax cube from which these two cubes were
carved out.

He decided to melt the remaining unused wax, mould it into a
rectangular
block, pack it in a rectangular wooden box and transport it to a
warehouse a few miles away. He hired a carpenter to make the box.
However, much to the dismay of the artist, the carpenter made a
rectangular box that wasn't big enough to pack the unused wax.

The rectangular block of wax he could fit in the box was as tall as
the
wax structure he had made. Its length was equal to the height of one
wax
cube in the structure and its breadth was equal to the height of the
other cube. How many trips does he have to make to the warehouse?

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Originally posted at: http://cotpi.com/p/23/
Correct solutions will be archived at the cotpi link mentioned above.
Solutions to 'Sum of twin primes': http://cotpi.com/p/22/?r=1#22-1