Ratio - Compares two different quantities measured in the same units .

Rate - Compares two different quantities measured in different units .

What is the difference between Rate and Ratio ?

The difference between the two are one is measured in the same units and the other is measured in different units .

Page 60

4 . Determine the unit rate in each situation .

a) An orca swims 110 km in 2 h .

- 2/2 = 1h , 110/2 = 5km . = 55km/h .

- 12.5/12.5 = 1h , 800/12.5 = 64km . = 64km/h .

- 30x2 = 1h, 45x2 = 90 daffodils . = 90 daffodils/h .

10. 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 ?

Trevor -

- 3/3 = 1h , 84/3 = 28km . = 28km/h .

- 2.5/2.5 = 1h , 70/2.5 = 28km . = 28 km/h .

The total amount of coins add up to $100.00 . You divide it with 3 friends . how much would each person get?

- 3/3 = 1 person , 100/3 = 33.33 . = $33.33/person .

This is the grade 8 ingredients for Spaghetti Sauce . We were told that this ingredients serves up to 4 people. Mr. Harbeck , gave us 2 questions to answer .

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

I multiplied 4 by 2.5 which equals 10 . Then I decided to multiply the ingredients by 10 .

1 1/4 lb ground beef

2 1/2 medium onion diced

2 1/2 celery finely sliced

2 1/2 clove of garlic

35 oz can of tomatoes chopped

1 1/4 can of tomato paste

2 1/2 tsp parsley

3 3/4 tsp basil

2 1/2 tsp oregano

2 1/2 tsp sugar

1 1/4 tsp Worchestershire Sauce

1 1/4 tsp seasoning salt

2 1/2 bay leaf

2.What would the recipe look like if you had to only serve 1 person? Show your calculations.

I divided 4 by 4 which equals 1 . Then I divided all the ingredients by 4 .

1/8 lb ground beef

1/4 medium onion diced

1/4 celery finely sliced

1/4 clove of garlic

3.5 oz can of tomatoes chopped

1/8 can of tomato paste

1/4 tsp of parsley

0.375/7.5ml tsp of basil

1/4 tsp of oregano

1/4 tsp of sugar

1/8 tsp of Worchestershire Sauce

1/8 tsp of seasoning salt

1/4 bay leaf

## 1 comment:

goood job , you did a good job with the colours .

Post a Comment