Tuesday, November 11, 2014

Lei's Proportion problem



1. If apples cost $6,how much would 12 apple cost ?
Let x be the cost for 12 apples
It will cost $24 for 12 apples


http://chicolockersausage.com/2011/12/30/what-is-really-in-a-hot-dog/
2.You can buy 2 hotdogs for $3, how much would it be for 4 hotdogs?
Let x be the cost for 4 hotdogs
The cost for 4 hotdog is $6

 Your problem :
You estimate that you can do 10 math problems in 30 mins. How long should it take you to do 20 math problems?

2 comments :

  1. Kim Garcia November 12, 2014 at 4:09 PM

    The answer for the question is ...
    Let "x" be how long it should take you to do 20 problems
    Steps: word ratio , ratio table , proportion , find x

    Problem | Min
    10 | 30
    20 | X Find proportion

    10x=30x20
    10x=600
    /10 /10

    x= 60

    It should take you 60 min to finish 20 math problems

    ReplyDelete
  2. UnknownNovember 12, 2014 at 6:09 PM

    Answer:
    ~It would take you 60 min to finish 20 math problems (I got the answer by doing cross multiplication)

    ReplyDelete