Percentages — Quiz 3

Questions in this quiz (10)

1. 11 is 4% of 5% of what?

   • $$55$$
   • $$5$$
   • $$5500$$
   • $$45$$

2. A 20% portion of a school’s budget would be represented by how many degrees on a pie chart?

   • 72
   • 36
   • 55
   • 40

3. If the worth of a new tech startup grows by 30% each year for 4 years, what is the overall percentage increase in its worth after 4 years?

   • $$185.61%$$
   • $$18.6%$$
   • $$1.86%$$
   • $$25%$$

4. Jordan participates in a challenge where he first increases a number by 50%, and then decreases the resulting number by 50%. What percentage does the final number represent of the original number?

   • $$75%$$
   • $$50%$$
   • $$65%$$
   • $$7.5%$$

5. 18% of 600 is equal to 30% of what number?

   • 280
   • 360
   • 400
   • 540

6. Of the 500 students at Lincoln Middle School, 12% are on the basketball team, and 85% of the basketball players are not in the debate club. How many basketball players are in the debate club?

   • 7
   • 9
   • 10
   • 12

7. If $$40%$$ of $$x$$ equals $$60%$$ of $$y$$, what is $$70%$$ of $$y$$ if $$x=50$$?

   • $$\frac{70}{3}$$
   • $$\frac{100}{3}$$
   • $$\frac{200}{3}$$
   • $$\frac{20}{3}$$

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

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

9. Jessica took a test that consisted of two sections. The first section contained 40 questions, and the second section contained 30 questions. Jessica answered 90% of the questions in the first section correctly. After the test, her teacher determined that Jessica answered 80% of all the questions on the test correctly. How many questions did Jessica answer correctly in the second section of the test?

   • 18
   • 20
   • 22
   • 24

10. The Lions have won 15 games and lost 10. How many straight games do the Lions need to win to increase their winning percentage to 75%?

    • 15
    • 18
    • 20
    • 22