Frank builds kitchen cabinets. He offers four different wood finishes. 1⁄8 of his customers choose dark walnut; 2⁄5 choose golden oak; and 3⁄10 choose cherry. The rest of the customers prefer a natural finish. What fraction of the customers choose the natural finish?

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28 June, 10:10

Frank builds kitchen cabinets. He offers four different wood finishes. 1⁄8 of his customers choose dark walnut; 2⁄5 choose golden oak; and 3⁄10 choose cherry. The rest of the customers prefer a natural finish. What fraction of the customers choose the natural finish?

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Answers (2)

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Marc Sellers · Answer 1

7/40 of Franks customers chose the natural finish.

Hodges · Answer 2

So you subtract the fractal amounts from the whole with all of his customer being 1 and adding all the fractions 1 - (1/8+2/5+3/10)

1 - (1/8+4/10+3/10)

1 - (1/8+7/10)

1 - (5/40+28/40

1 - (33/40)

1=40/40

40/40-33/40

7/40 of his customers chose a natural finish