Example Question - percentage of a quantity

Calculating Percentages and Finding the Percentage of a Quantity

a. \[ \frac{2.5}{100} \times 300 = 7.5 \] b. \[ \frac{50}{100} \times 5 = 2.5 \] c. \[ \frac{2}{60} \times 100 = 3.\overline{3} \] d. \[ \frac{12.5}{100} \times 400 = 50 \] e. \[ \frac{250}{1000} \times 100 = 25 \] f. \[ \frac{11}{9} \times \frac{720}{100} = 88 \] g. \[ \frac{3 \frac{1}{3}}{x} \times 24 = 100 \rightarrow x = \frac{24 \times 3 \frac{1}{3}}{100} = 8 \] h. \[ \frac{60}{100} \times x = 45 \rightarrow x = \frac{45 \times 100}{60} = 75 \] i. \[ \frac{25}{100} \times x = 9 \rightarrow x = \frac{9 \times 100}{25} = 36 \] j. \[ \frac{75}{100} \times x = 18 \rightarrow x = \frac{18 \times 100}{75} = 24 \] k. \[ \frac{13}{100} \times x = 1170 \rightarrow x = \frac{1170 \times 100}{13} = 9000 \] l. \[ \frac{5}{100} \times x = 750 \rightarrow x = \frac{750 \times 100}{5} = 15000 \]