Pages

Subscribe:

Ads 468x60px

Creative Commons License

Clustr Map

Search This Blog

Wednesday, December 14, 2011

Patricia's Textbook Questions 4,7,4

Page 148

4) Chris purchased the following items:


  • 2 binders for $4.99 each

  • 1 math set for $3.99

  • a backpack for $19.99

Find the total cost including 5% GST and 7% PST.


1- 4.99x2+3.99+19.99=33.96


2- 0.12x33.96=4.08


3- 4.08+33.96=38.04


Page 149


7) A herd of 100 caribou was moved to a new location. The population increased by 10% the first year and then increased by 20% the second year.


a) Find the population after the second year.


1- o.10x100=10


2-100+10=110


3-0.20x110=22


4-110+22=132 caribou


b) Explain why there was not a 30% increase in population over the two years.


Because increase is not 30%, the 20% increase in the second year and the 10% increase in the first year.


Page 150


4) How many hundred grids are needed to show each of the following percents?


a) 101% b) 589% c)1450%


For a: you will need 2 hundred grids.


For b: you will need 6 hundred grids.


For c: you will need 15 hundred grids.

0 comments:

Post a Comment