4 An alloy is a mixture of metals. Most of the gold used in jewellery is an alloy of pure gold and other metals which are added to make the gold harder. Pure gold is 24 carats (ct), so 18 carat gold is an alloy of gold and other metals in the ratio 18: 6. In other words, 18 parts pure gold 24 and 24 other metals. (a) A jeweller makes an 18 ct gold alloy using three grams of pure gold. What mass of other ISET metals does she add? (b) An 18 ct gold chain contains four grams of pure gold. How much other metal does it contain? (c) What is the ratio of gold to other metals in 14 ct gold? (d) What is the ratio of gold to other metals in 9 ct gold?
4 An alloy is a mixture of metals. Most of the gold used in jewellery is an alloy of pure gold and other metals which are added to make the gold harder. Pure gold is 24 carats (ct), so 18 carat gold is an alloy of gold and other metals in the ratio 18: 6. In other words, 18 parts pure gold 24 and 24 other metals. (a) A jeweller makes an 18 ct gold alloy using three grams of pure gold. What mass of other ISET metals does she add? (b) An 18 ct gold chain contains four grams of pure gold. How much other metal does it contain? (c) What is the ratio of gold to other metals in 14 ct gold? (d) What is the ratio of gold to other metals in 9 ct gold?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.1: Ratios
Problem 25WE
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage