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## Wednesday, October 12, 2011

### Aicelle's Proportion Post

What is ratio?

A ratio shows the relationship between 2 quantities.
Ex. 13:43

What is rate?

A rate compares two quantities measured in different units.
Ex. 40m/h or \$0.70/100g

What is proportion?

A proportion shows an equation which state that 2 ratios or fractions are equal.
Ex. 4/8=48/96

4x12=48 8x12=96

1.) 5 hours to travel 360 miles is about
72mph

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. 200 ml
25/100 = 50/x
25x4=100 50x4=200

What are the three ways you can prove that equivalent ratio statements are true?

3/4 = 12/16
TRUE

4/9 = 16/32 FALSE

1. Does this seem fair? No.
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 because the homeless person had 15 years in prison for stealing \$100 to have a place to sleep in, but surrendered the next day because he felt guilty. While the CEO of the Ex-Mortgage took away \$3 billion and only went to prison for 3 years.
3. What would you have done if you were the judge? I would have given him a year or 10 months in prison because he surrendered voluntarily also he only took \$100. The CEO, I would've given him 30 years in prison because he took away the \$3 billion from the company.