## Wednesday, October 12, 2011

### Tinille's Propotion Post

Ratio- is a way showing the relationship of two numbers.

ex. What is the ratio of red ponytails to blue ponytails?

Answer: 3:4 , three to four , 3/4

Rate- is a comparison of two quantities measured in different ways.
ex. Car drives 3 hours a day and goes 300 km. How far those it go in 1 hour?

Proportion- an equation which states that two ratios or fractions are equivalent.

ex. The scale on the map is 1 cm: 5 cm. What distance does 3.5 cm represent?

1. 5 hours to travel 360 miles is about ____ 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 the same proportion? The orange juice is 50 ml to start with.

Three ways how to prove that 3/4 and 12/16 are the same.

1. Does it seem fair?

No, it is not fair at all.

2. With what you know about proportion look and read what is in the image above. Does it seem just fair? Why have you made this choice?

No it is not fair because the boy who attempt to get \$ 3 billion got 3 years sentenced but Roy Brown got 15 years sentence just because he attempt to get \$ 100.

3. What would you have done if you were the judge?

If I were the judge I would change the decision. Instead, I would give the boy who attempt to get \$ 3 billion 15 years sentence and I would give Mr. Brown what he receive. I'll give him about a year or half of the year because he turned himself in.