## Thursday, October 13, 2011

### Jason's proportion post

Ratio-a ratio is used when you compare two quantities with each other
Example
Part to part ratio
4:2
4 is the red squares and 2 is the blue squares

Rate- a comparison of two quantities measured in different units
Example
If 5 bananas cost \$1. Whats the cost of 15 bananas?
15 bananas cost \$3.
Proportion-an equation which states that two ratios (fractions) are equal
Example
This is a proportion statement.

1.5 hours to travel 360 miles is about __ mph
5 hours to travel 360 miles is about 75 mph

2. As a playgroup worker, if i increase the amount of apple juice i am serving at the playgroup from 25 ml to 100 ml, how much should I increase the orange juice to, to keep the quantities in the same proportion? the orange juice is 50 ml to start with.

3/4 = 12/16

Sorry i forgot how to upload the video so hear is the link

1 Do you think its fair?
No i don't think its fair

2 With what you know about proportion look and read what is in the image above. Does it seem just and fair? Why have you made this choice?
The other guy had to spend 15 years in prison for stealing only \$100.

3 What would you have done if you where the judge?
I would sentence him to a moth in prison.