"Stuart Noble" wrote in message
om...
dennis@home wrote:

The correct solution has already been given.

There's no "correct" solution, headmaster. You use whatever the situation
requires.

There are several correct solutions and lots of incorrect ones, using
toggles is not in the correct solution camp, none that rely on the plaster
board for strength are.
Plaster board is not a structural material for anything much heavier than a
clock.