Question

Find the percentage of pure gold in 22-carat gold, if 24-carat gold is 100$\%$ pure.

Answer 1

24-carat gold is 100$\%$ pure $\therefore$ 22 parts out of 24 part in 22-carat gold $\therefore$ Percentage = $\frac{22}{24}\times 100=\frac{1100}{12}\%=91\frac{8}{12}\%=91\frac{2}{3}\%$