Answer
$\frac{3}{4}$
Work Step by Step
18 carat gold.
It has all 18 part gold and 6 parts alloy.
$\frac{Parts of Gold}{Parts of gold + parts of alloy} = \frac{18}{18+6} = \frac{18}{24} = \frac{18\div6}{24\div6} = \frac{3}{4}$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 2 - Multiplying and Dividing Fractions - Review Exercises - Page 188: 22
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