Printable Puzzles Online

The question was -
The school’s photocopier is broken, and you cannot copy at 100% (that is you cannot immediately make a copy the same size as the original).
The copier can do copies at 50%, 75%, 133% and 400%.
How can you make a copy the same size as the original?
You’ll have to think about making copies of copies to solve the problem – for example 120% of an 80% copy = 1.20 x 0.80 = 0.96 – that is 96% of the original.

The answer is -
50% x 400% x 400%