## Sunday, November 15, 2009

### How I stopped an Alien Invasion using Proportion !

Alien Story : Long long ago , a group of math students saved the earth from aliens by using PROPORTIONS ! YAY !

Okay , so I think the homework was to use proportions to stop alien's from invading earth by taking 3 questions from pages 67, 68, and 69 , so here I go !

Page 67 , Question 5:

5. What is the unit rate in each?
a) Two pens cost 94¢.
b) Four blocks stacked one on top of
the other are 24 cm high.

a)

b
)

Page 67 , Question 9

9. Determine the missing value to make each
rate equivalent. Include the units.

a)
b)

c) d)

Page 68 , Question 16

A gardener takes a half hour to mow and
weed a lawn that measures 20 m by 15 m.
He charges \$25 per hour. How much
should the gardener receive for a lawn that
measures 40 m by 30 m?

He will earn \$25 because if it takes him half an hour ( 30 minutes ) to do 20m by 15m it will take him 1 hour to do 40m by 30m because 20m x 2 = 40m and 15m x 2 = 30m .

Hope you like it !

1. WOW ! awesome post nice work .

2. Where's your alien story?

3. oh , my bad , I'll add one

4. Very well done, and easy to follow. You showed all your work which is a good thing as well.
Shelby Mackey

5. good job! your post is very well done because it easy to understand and you explained it really well..

6. Awesome Job Kevin! Your post was very well done! Big letters for easy to read, picture are small yet readable, and you had explained it very well!