## Sunday, November 1, 2009

### Princess' Rate Growing Post

Part 1 :

Rate:
compares 2 quantities measured in different units.

Ratio:
compares 2 quantities measured in the same units.

Difference:
Ratio, measures of 2 different quantities in the same unit.
Rate, measurements of different units per unit.

8. Fraser is shopping for milk. It is available in three sizes.

a) What is the unit price for each carton of milk?
small = \$0.24/100mL
medium = \$0.22/100mL
large = \$0.20/100mL

b) What is the unit price per 100 mL for the l-L carton?
\$0.20/100mL

c) Which carton of milk is the best buy? Explain why.
The large carton is the best buy because the cost per 100mL is the least.

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 and Jillian are the same speed. Because they both rode 28km/h.

Coin Question :

If the quarters were stacked, how tall would they be ?
25 cents = 2mm
2mm x 40 = 80mm

80mm/ 40 quarters
2mm/quarter.

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

#### 1 comment:

Harvey841 said...

I don't know why, but my part 2 looks the same as yours....