Tuesday, October 11, 2011

Lances Proportion Post

ratio: the relation between two similar magnitudes with respect to the number of times the first contains the second eg. the ratio of 5 to 2, written 5:2 or 5/2.

rate: A ratio that compares two quantities measured in different units eg 15 to 20 or 15:20

proportion: comparative relation between things or magnitudes as to size, quantity, number, etc.; ratio.

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

hrs      5         1
----    ----- = -----             
miles  360     72
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.

 apple j    25ml   100ml
---------   --------- = ----------       You should increase 50 to 200 ml of orange juice
orange j   50ml   200ml

3)What are the three ways you can prove that equivalent ratio statements are true? 3/4=12/16 diagonally (multiply top left and bottom right) vertically, and horizontally.




 1)Does this seem fair?
    No it isn't 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?
It isnt fair because the CEO gets a 40 Month sentence for a 3Billion fraud and a homeless man steals $100 and gets a 15 year sentence ITS NOT FAIR!!!!
 3)What would you have done if you were the judge?
I would just give him a 2 week sentence and he is free to go

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