Percentages — Quiz 1

Questions in this quiz (10)

1. what is $$x%$$ of $$y$$?

   • $$\frac{x}{y} \cdot 100$$
   • $$\frac{x}{100} \cdot y$$
   • $$\frac{x}{100y}$$
   • $$\frac{y}{x} \cdot 100$$

2. $$x$$ is what percent of $$y$$?

   • $$(\frac{x}{y}) \times 100$$
   • $$(\frac{x}{y}) \times 100$$
   • $$(\frac{y}{x}) \times y$$
   • $$\frac{x}{100y}$$

3. If the quantity $$x$$ is decreased by $$r\%$$, what is the new value of $$x$$?

   • $$x-r$$
   • $$x-\frac{rx}{100}$$
   • $$x-\frac{r}{100}$$
   • $$-\frac{rx}{100}$$

4. The number of employees at a company decreased by 25% from 2022 to 2023. If the number of employees in 2023 was $$n$$, which of the following expressions gives the number of employees in 2022 in terms of $$n$$?

   • $$\frac{4n}{3}$$
   • $$0.75n$$
   • $$0.25n$$
   • $$0.5n$$

5. If $$a$$ is 40% larger than $$b$$, and $$c$$ is 10% larger than $$b$$, then $$a$$ is what percent larger than $$c$$?

   • $$27.27%$$
   • $$30%$$
   • $$25%$$
   • $$28.45%$$

6. What is 35% of 480?

   • $$168$$
   • $$14$$
   • $$140$$
   • $$145$$

7. 25 is what percent of 625?

   • $$14\%$$
   • $$4\%$$
   • $$11\%$$
   • $$6\%$$

8. A movie ticket used to cost 1.50 dollars. It now costs 7 dollars. How much has the price increased in percentage?

   • $$47.7\%$$
   • $$4.7\%$$
   • $$366.67\%$$
   • $$477.7\%$$

9. Lena found a backpack priced at $150. The store is offering a 25% discount on all backpacks. How much will Lena pay for the backpack (excluding sales tax)?

   • $$120.5$$
   • $$125.5$$
   • $$112.5$$
   • $$115.5$$

10. To meet her business goal, Sarah needs to make a 40% profit on every item she sells. If she buys a jacket from her supplier for $75, what should her selling price be?

    • 115
    • 95
    • 85
    • 105