Q.
Percentage of gold in 21.6 carat gold is
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a
21.8%
b
90%
c
10%
d
70%
answer is B.
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Detailed Solution
21.6 caratgold contains 21.6 parts of gold in 24 parts by weight of alloy.∴% of gold in 21.6 carat gold =21.624×100=90%