## Thursday, December 17, 2009

### charis' growing post

definitions :
ratio - compares 2 quantities measured in different units.
rate - compares 2 quantities measured in the same units.

difference :
The difference is that ratio compares two different quantities in the same units and rate compares two different quantities in different units.

questions :
How many pennies would there be in 7 jars ? if there were 5840 pennies in 7 jars , how much would there be in a jar ? 5840 divided by 7 = 834 . so there would be 834.. pennies in 7 jars.

Determine the unit rate in each situation.

question : An orca swims 110 km in 2 hours.

You can get the answer by first getting the hours to 1 hour for the unit rate. so divid it by itself which is 2, then you get 1. You do the same to the other side and you get 55.

question : A Canada goose flies 800 km in 12.5 hours.

You divide each side by 12.5 and you get 64 on the km and 1 in the hours.

question : Cathy plants 45 daffodils in 30 min.

You multiply each side by 2. Which gets you the answer 90 daffodils/ h.

part 2
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
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
lb medium onion, diced - 1 x 2.5 =

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

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