Monday, November 16, 2009

How I stopped an alien invasion using proportions



It was a warm bad summer day in the year 2020 and the some of the most dangerous aliens were planning to invade the whole Earth by firing a SUPER laser at Earth unless we answer 3 proportional questions.


The questions are:


Delia was paid $35 for 5hours of babysitting. How much should she recieve for 3 hours? use a unit rate to find the answer.







Delia will recieve $21 in 3 hours.










David can saw alog into 3 pieces in 7 minutes. If he continous sawing at a constant
rate. how long would it take him to saw a similar log into 6 pieces?




A small gear turns 18 times in the same time a large gear turns 4 times. How many times will the large gear turn if the small gear turns 54 times? Draw a diagram to help set up a proportion
and solve the problem.


3 comments:

×Jusŧıŋ£8-17× said...

nice post, i understand how you got the answers .

Ralph817 said...

Good Job! I liked how you explained everything.

Layton 8-17 said...

great job. you had lot of colour and pictures and understood everything. good job.

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