## Sunday, November 1, 2009

### %%%%% , Elijah's Rate Growing Post

Part one:

Definition of Ratio :
compares 2 sets of data in the same unit.

Definition of Ratess:
compares 2 amounts measured in different units.

example; 72 beats per minute - 72 beats/min

Difference :
ratio-measures of 2 different quantities in the same unit.
rate- measuerments of different units per unit.

Page 60 :

7. The table shows the price of different-sized
packages of mixed nuts.

a) What is the unit price per 100 g for each package?

Package 2 is better because compared to the other packages, package 2 is the cheapest.

Page 61 :

14. Conversion rates among currencies variesses from day to day. The numbers in the table give the value in foreign currency of one Canadian dollar on one particular day.

a) What was the value of \$600 Canadian in euros?

b) What was the value of \$375 Canadian in U.S. dollars?

c)What was the value of \$450 Canadian in Australian dollars?

Coin Question Again:

If the coins were stackled how tall would the stack be? ( turned into rate )

coin/mm or coin per mm

Pennies:
100mm/50 pennies
2mm/1 penny

Nickels:
60 mm/20 nickels
3mm/1 nickel

Dimes:
10mm/10 dimes
1mm/1 dime

Quarters:
8 mm/ 4 quarters
2mm/1 quarter

Part two

These are the Grade 8 ingredients for Spaghetti Sauce. This recipe serves 4 people.

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

I multiplied ' four's ' numbers by 2.5 to get 10 servings.

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

I divided 10 to ' ten ' to get 1.