Saturday, November 14, 2009

How I stopped an alien invasion using proportion

Okay so apparently there are some aliens on the world and be have to stop them by using 3 proportion questions on them, so here are my question and answers...

1. Question 20.

A breakfast cereal contains corn, wheat,
and rice in the ratio of 3 to 4 to 2. If a
box of cereal contains 225 g of corn, how
much rice does it contain?

Answer :

It contained 150 g of rice.

The reason why I multiplied by 74 is because 3 times 75 gives you the answer 225 . Whatever you do to one side you have to do to the other.

2. Question 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.



Sorry I don't have one for page 69. I went up to 24 but I didn't get the answer(s).

I've saved our planet from some of the aliens (:

1 comment:

  1. Nice try Karra! At least you had showed your work. Also the diagrams are hard to read. Anyways Good Job!


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