Ratios, Proportions, and Solving Proportions QUIZ



Ratios, Proportions, and Solving Proportions Study Guide name _____________________

Write a ratio in 3 ways to compare each of the following.

( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( (

1.) total objects to smiles 2.) telephones to books 3.) scissors to total objects

a. ______________ a. ______________ a. ______________

b. ______________ b. ______________ b. ______________

c. ______________ c. ______________ c. ______________

Using the pictures above, write each ratio as a fraction in simplest form.

4.) scissors to mailboxes 5.) smiles to pencils 6.) books to total objects

______________________ __________________________ ________________________

Find the value that makes the ratios equal.

7. 8.)

[pic], [pic] 12:19, _____: 38

Determine if each of the ratios in each pair form a proportion. Write YES if they do form a proportion and NO if they do not form a proportion and give proof (for example, cross multiply).

9.) [pic], [pic] 10.) [pic], [pic] 11.) [pic], [pic]

Solve each proportion using any method. You must show your work.

12.) [pic]= [pic] 13.) [pic]= [pic] 14.) [pic]= [pic]

15.) Jill is selling cookie dough. Three tubs cost $22.50. How much will 8 tubs cost?

16.) A basketball player made 12 free throws in 4 games this year. About how many free throws would you expect the player to make in 100 games?

17.) A pen cost $1.50, not including tax. If tax is 3% how much would the pen cost including tax?

18.) An I-Pod Touch costs $250. If it is on sale for 25% off, what would the price be after the discount?

19.) A pair of shorts costs $22.50, not including tax. If there is an 8% tax added on, what will be the price of the shorts after tax?

20.) A camera that costs $125 is on sale for a discount of 30%. What will be the price of the camera after the discount?

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