## Sunday, November 1, 2009

### Kathleen's Rate Growing Post

WWAAZZAAPP!

PART 1

DEFINITION :

• RATIO - measures two different quantities measures in the SAME unit .
• RATE - compares two quantities measured in DIFFERENT unit .

DIFFERENCE :
• The difference between a rate and a ratio is the unit .

QUESTION : PAGE 60
Determine the unit rate in each situation.
a) An orca swims 110 km in 2 h.

• 55km/h
b) A Canada goose flies 800 km in 12.5 h.
• 64km/h
c) Cathy plants 45 daffodils in 30 min.
• 2daffodils/minutes

PAGE 61
Trevor rode his mountain bike 84 km in 3 h. Jillian rode 70 km in 2.5 h. Who is the faster cyclist? How do you know?

COIN QUESTION :

How many dimes would there be in 2 jar ?
If there were 2600 dimes in 2 jars , how many would there be in one ?
(make a ratio table) find the UNIT RATE .
dimes|jar
divide by 2 2600 | 2 divide by 2
1300 | 1
So the UNIT RATE would be , 1300dimes/jar .

PART 2

1) What would the recipe look like if it had to serve 10 people ? Show your calculations.

- 10/4 = 2.5
• ground beef - 0.5 x 2.5 = 1.25 lb
• medium onion, diced - 1 x 2.5 = 2.5
• stalk celery finely diced - 1 x 2.5 = 2.5
• clove garlic, minced - 1 x 2.5 = 2.5
• canned tomatoes, chopped - 14 x 2.5 = 35 oz
• can tomato paste - 0.5 x 2.5 = 1.25
• parsley - 1 x 2.5 = 2.5 tsp
• basil - 1.5 x 2.5 = 3.75 tsp
• oregano - 1 x 2.5 = 2.5 tsp
• sugar - 1 x 2.5 = 2.5 tsp
• Worcestershire Sauce - 0.5 x 2.5 = 1.25 tsp
• seasoning salt - 0.5 x 2.5 = 1.25 tsp
• bay leaf - 1 x 2.5 = 2.5

2) What would the recipe look like if you had to only serve 1 person ? Show your calculations .
- 10÷1 = 10
• ground beef - 1.25 ÷ 10 = 0.125 lb
• medium onion, diced - 2.5 ÷ 10 = 0.25
• stalk celery finely diced - 2.5 ÷ 10 = 0.25
• clove garlic, minced - 2.5 ÷ 10 = 0.25
• canned tomatoes, chopped - 35 ÷ 10 = 3.5 oz
• can tomato paste - 1.25 ÷ 10 = 0.125
• parsley - 2.5 ÷ 10 = 0.25 tsp
• basil - 3.75 ÷ 10 = 0.375 tsp
• oregano - 2.5 ÷ 10 = 0.25 tsp
• sugar - 2.5 ÷ 10 = 0.25 tsp
• Worcestershire Sauce - 1.25 ÷ 10 = 0.125 tsp
• seasoning salt - 1.25 ÷ 10 = 0.125 tsp
• bay leaf - 2.5 ÷ 10 = 0.25