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Mathematics 9 Online
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?

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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