Quiz 1: Ratio & Proportion - Monroe Co Schools KY



Study Guide for Ratio & Proportion Name ______________________ Class ________________

Solve each of the following problems. Show all calculations. You may use a calculator.

Do not forget to include units. (Round all answers to the tenths.)

|A pizza cut into 8 pieces cost $10.00. What is the cost per piece? |In the year 1986, Reg Morris ate 30 hotdogs in 64 seconds. How many |

| |seconds per hotdog is this? |

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|The West Edmonton Mall in Canada is the largest mall in the world. |In the year 1990, a total of 320 points were scored in a basketball |

|20,000,000 people visit the mall each year. If the mall is opened |game between the Golden State Warriors and the Denver Nuggets. There|

|every day, what is the average number of people per day at the mall?|are 48 minutes of play in a game. What is the average number of |

| |points per minute in the game? |

|(1 yr. = 365 days) | |

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|7. Determine which is the best buy. Show calculations and explain your answer. |

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|Question to Consider: | |

|How do we know if a ratio is a true proportion? | |

|Which pairs of ratios are proportions? | |

| |9. Solve the proportion. Show your work. |

|a) [pic] [pic] b) [pic] [pic] c) [pic] [pic] | |

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Be sure to write a proportion for the following words problems. Remember to label.

10. 3.6 grams of salt will dissolve in 10 grams of water. How many grams of salt will dissolve in 1000 grams of water?

11. The ratio of oil to vinegar in a certain salad dressing is 8:5. How much oil must be blended with 7 liters of vinegar for that recipe?

12. If 4 T-shirts cost $15, how much will 12 T-shirts cost?

13. On a map with a scale of 1cm = 15km, two towns are 7.5 cm apart. How far apart are they in real life?

Use cross products to find n.

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Write each ratio in simplest form and in 2 different ways.

1. What is the ratio of the number of frogs to the number of snails?

2. What is the ratio of the number of snails to the total number of animals?

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