Question

Find the percentage of pure gold in 22-karat gold, if 24-karat gold is hundred percent pure gold.

• A. $91\frac{2}{3}\%$
• B. $8\frac{2}{3}\%$
• C. $9\frac{2}{3}\%$
• D. $91\frac{5}{7}\%$

Answer 1

The correct option is A

$91\frac{2}{3}\%$

In 22 - carat gold, pure gold is 22 parts out of 24 parts.

$\therefore$ Percent of pure gold in 22 - carat gold $=(\frac{22}{24}\times 100)\%=91\frac{2}{3}\%$