Two fifths of the instruments in the marching band are brass, one third are percussion, and the rest are woodwinds. What fraction of the band is woodwinds? Help me

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05-01-2015
Mathematics

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Two fifths of the instruments in the marching band are brass, one third are percussion, and the rest are woodwinds. What fraction of the band is woodwinds? Help me

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LittleMissPini LittleMissPini · Answer 1 · 2015-01-05T23:12:56-05:00

LittleMissPini LittleMissPini

05-01-2015

2/5 of instruments= brass
1/3 of instruments= percussion
so add 2/5 and 1/3= 6/15+5/15= 11/15

So 15/15-11/15= 4/15
So Woodwinds make up 4/15 of the band

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hannah2019290 hannah2019290 · Answer 2 · 2015-01-05T23:14:26-05:00

hannah2019290 hannah2019290

05-01-2015

First calculate how much of the whole band the brass and percussion take.
2/5+1/3= 6/15+5/15= 11/15
A whole is 1, which is 15/15, so
15/15-11/15=4/15
4/15 of the band is woodwinds.

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