Proportions (7)

Solving Proportions 1

100

1/4 = x/20

x=5

200

20/14 = 10/x

x=7

300

8/x = 88/22

x=2

400

7/9=(c+20)/9

What is -13

500

(x-10)/23=7/8

What is 30.12

Solving Proportions 2

100

x/3 = 16/12

x=4

200

9/5 = x/45

x=81

300

x/1.2=4.62/0.88

x=6.3

400

(2x-5)/16=5/7

What is 8.21

500

17/(9k-9)=5/7

What is 3.64

Word Problems

100

A bag of 5 apples costs $3.75. What is the cost per apple?

5/3.75 = 1/x

x=$0.75

200

5 movie tickets cost $45. How much would 8 tickets cost?

5/45=8/x

x=$72

300

A baker uses 6 cups of flour to bake 3 loaves of bread. How much flour is needed for 10 loaves?

6/3=x/10

x=20 c u p s

400

A tank can be filled with 500 gallons of water in 4 hours. How much water is filled per hour?

500/4=x/1

x=125 g a l

500

A car travels 240 miles on 8 gallons of gas. How many miles per gallon does the car get?

240/8=x/1

x=30 mi

Percents

100

What is 20% of 200?

(20%)/100=x/200

x=40

200

20 is 40% of what number?

(40%)/100=20/x

x=50

300

What percent of 200 is 46?

(x%)/100=46/200

x=23%

400

Peter got a 23 out of 25 on his test. What was his grade as a percentage?

(x%)/100=23/25

92%

500

You tip Mr. Cortez $24 at a restaurant (thanks!) You gave him a 25% tip of the bill. How much was the whole bill?

(25%)/100=24/x

x=$96

General

100

Who wrote Hamlet?

Shakespeare

200

What organism makes bread rise?

Yeast

300

What country's capital is Lima?

Peru

400

What element's symbol is Mg?

Magnesium

500

What is the least populated state in the U.S.?

Wyoming