## Thursday, October 13, 2011

### Marielle's Proportion Post

Ratio - comparison between two different of things.

Rate - A comparison of twoo quantities measured in different units. it can be expressed as a fraction, but cannot be express as a percent. Unit rate is a rate in which the second term is one

Proportion - A relationship that says that two ratios or rates are equal.

1. 5 hours to travel 360 miles is about 72mph. Here's how I did it. . . .

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 the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with.

What are the three ways you can prove that equivalent ratio statements are true?
3/4 = 12/16

• Does this seem fair?

•  15 years in prison for stealing 100 dollars is not fair.
• 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?

• This is NOT fair because Paul R. Allen stole 3 billion dollars and he only have to stay in prison for 40 months/ 3years. However, a homeless man, Ray Brown only stole 100 dollars and he have to stay in jail for 15 YEARS!! Even though he felt guilty.
• What would you have done if you were the judge?

• If I were the judge I would give Paul Allen a 15 years contract (or even more than 15 years!) and Roy Brown should only have a year or half in prison.