In a high school orchestra, the ratio of cellos to violins is 1 to 3. There are 21 violins. Write and solve a proportion that gives the numb

Question

In a high school orchestra, the ratio of cellos to violins is 1 to 3. There are 21 violins. Write and solve a proportion that gives the number c of cellos in the orchestra.

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Cherry 6 months 2021-08-30T07:14:17+00:00 1 Answers 2 views 0

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    2021-08-30T07:15:17+00:00

    Answer:Number of cellos  =7

    Step-by-step explanation:

    The ratio of cellos to violins is 1 to 3=1:3

    Total ratio = 1+3=4

    To find the total number of  cellos and violins in the orchestrs,

    Ratio of violins/ Total ratio  x Total number of cellos and violins  = Number of violins

    3/4  x X= 21

    X=21 x 4 / 3

    X =7x 4  28.

    Number of cellos  =Ratio of cellos / Total ratio  x Total number of cellos and violins

    =1/4 x28

    =7 cellos

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