Question

If you copy a document on a​ machine, you should get a similar copy. Suppose you want to reduce a document to 1/4 of its original size and you first reduce it by 33.3%. By what percent do you need to reduce the copy to obtain the desirable​ size?

Answer 1

100 - 33.33 = 66.66%
You want 25%
66.66% * x = 25%
37.5%
Now
1 - 37.5% = 62.5%
62.5% of 66.66 = 25