# algebra

The ratio of the lengths of strings that play the notes D and B (on a guitar), is 27 to 16. If a string 64 cm long plays B, what is the length of the string that plays a D?

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1. D : B = 27 : 16 = D : 64

D/64 = 27/16
D = 64(27/16) = 108

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posted by Reiny

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