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## Wednesday, October 12, 2011

### Anita's Proportion Post

Ratio- shows the relative sizes of two or more values.
example; 1:2, 2:4, 3:6

Rate- compares two quantities measured in different units.

example; \$1.69 per 100g or \$1.69/100g.

Proportion- an equation which states that two ratios or fractions are equal.
example;

5 hours to travel 360 miles is about ____ mph.

You would travel 72 miles per hour.

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

You need to increase the amount of juice by or multiplying it by 4.

What are three ways to prove that equivalent ratio statements are true?
3/4 = 12/16 or 4/9 = 16/32

3/4 = 12/16 is correct.

4/9 = 16/32 is false.

1) Does this seem fair? No, it is not 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?

No, it does not seem fair.

3) What would you have done if you were the judge? If I were the judge, i would have given Paul R. Allen 15 years in prison, and Roy Brown 2 months in prison.