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December 16, 2010

Millionaire and Hats



A millionaire bought a job lot of hats 1/4 of which were brown.
He sold 2/3 of the hats including 4/5 of the brown hats.
What fraction of the unsold hats were brown.

4 comments:

Ólafur said...

6/40 hats remaining are browm

grant said...

i got 6.6 reapeating percent

Anonymous said...

X=number of hats
1/4x=brown hats
1/5*1/4x=Brown hats unsold
1/3=total number of hats unsold

Hence ratio
1/20x ÷ 1/3x=3/20

Anonymous said...

30%