Percents: Finding Percents in Word Problems

1. 90%

$\eqalign{\dfrac{27}{30}=\dfrac{x}{100}\\2700=30x\\x=90}$

2. 16.67%

$\eqalign{\dfrac{10}{60}=\dfrac{x}{100}\\1000=60x\\x=16.\overline{66}}$

3. 41.67%

$\eqalign{\dfrac{10}{24}=\dfrac{x}{100}\\1000=24x\\x=41.\overline{66}}$

4. \$6

$\eqalign{\dfrac{x}{40}=\dfrac{15}{100}\\600=100x\\x=6}$

5. 20 problems

$\eqalign{\dfrac{x}{80}=\dfrac{25}{100}\\2000=100x\\x=20}$

6. 8 books

$\eqalign{\dfrac{6}{x}=\dfrac{75}{100}\\600=75x\\x=8}$

7. 44.44%

$\eqalign{\dfrac{4}{9}=\dfrac{x}{100}\\400=9x\\x=44.\overline{44}}$

8. \$7.50

$\eqalign{\dfrac{x}{50}=\dfrac{15}{100}\\750=100x\\x=7.5}$

9. 120 seniors

$\eqalign{\dfrac{12}{x}=\dfrac{10}{100}\\1200=10x\\x=120}$

10. 500 lines

$\eqalign{\dfrac{350}{x}=\dfrac{70}{100}\\35000=70x\\x=50}$