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If 24-carat gold is 100 percent pure, then what percentage of 22-carat gold is pure?

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9123 %

9113 %

9013 %

None of the above

answer is A.

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Detailed Solution

Given that, 24-carat gold is 100 percent pure.
Let 22-carat gold = 22 parts of pure gold out of 24-carat pure gold.

⇒

% of pure gold in 22-carat gold,

⇒ 2224 × 100 %

⇒ 113 × 25 % ⇒ 2753 % ⇒ 9123 %

⇒

% of pure gold in 22-carat gold

= 9123 %

.
Hence, option 1 is correct.

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