The Ravenswood forest has four times as many gnomes as the Westerville woods. If there are 20 gnomes in Westerville woods, how many gnomes would remain in Ravenswood forest if 40% of the gnomes are taken for use by the forest owner?
If there 20 gnomes in Westerville woods, the Ravenswood forest has 4*20=<<20*4=80>>80 gnomes.
If 40% of gnomes in the Ravenswood forest are taken for use by the owner of the forest, the number of gnomes will reduce by 40/100*80=<<40/100*80=32>>32
The number of gnomes that will remain is 80-32=<<80-32=48>>48
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