Mathematics, 27.03.2020 12:37 jaydqueen3155

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One model of a portable keyboard, Model A, has a total of 61 black and white keys. It has five full octaves with 5 black keys in each octave. The Model B portable keyboard has 76 black and white keys. It has six full octaves with 5 black keys in each octave and one extra black key.

Find the number of white keys on the Model A keyboard.

Find the number of white keys on the Model B keyboard.

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