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OpenStudy (ny,ny):
an orchestra consists of string instruments and wind instruments in ratio of 9 to 4. There are 91 string and wind instruments in the orchestra. How many string instruments are there? How many wind instruments?
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OpenStudy (anonymous):
Let x be the number of 1 ratio 91 = 9x + 4x 91 = 13x x = 7 9 x 7 = 63 string instruments
OpenStudy (ny,ny):
why did you do 9 x 7?
OpenStudy (anonymous):
A ratio of 9:4
OpenStudy (anonymous):
And one ''piece of ratio'' is 7.
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