RebeccaPink6398
  • RebeccaPink6398
help with fractions PLEASE!!!!
Mathematics
chestercat
  • chestercat
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RebeccaPink6398
  • RebeccaPink6398
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welshfella
  • welshfella
this is a proportion problem in 4 1/2 hours it rose 1 1/4 inches so in 1 hour it rose 1 / 1/4 divided by 4 1/2
RebeccaPink6398
  • RebeccaPink6398
i know i did these before :) i just dont get fractions :( i dont know how to add or subtract or divide or anything

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welshfella
  • welshfella
do do this division you convert each fraction to an 'improper fraction' 4 1/2 = 8 1/2 's + 1/2 = 9 1/2's = 9/2 1 1/4 = 4 1/4's + 1/4 = 5 / 4
welshfella
  • welshfella
did you follow that ok?
RebeccaPink6398
  • RebeccaPink6398
no i dont get it :(
welshfella
  • welshfella
there are 8 1/2's in 4 because there are 2 1/2's in one and 4*2 = 8
RebeccaPink6398
  • RebeccaPink6398
ok
RebeccaPink6398
  • RebeccaPink6398
umm i still i dont know what to do next
welshfella
  • welshfella
when we divide fractions we invert the second one ( the one we are dividing by) and multiply so|dw:1432918164656:dw|
welshfella
  • welshfella
multiplyimg fractions is easy - just multiply the 2 top numbers and multiply the 2 bottom
welshfella
  • welshfella
you can simply this one first because 2 divides into 2 and 4
RebeccaPink6398
  • RebeccaPink6398
so 1 and 2
welshfella
  • welshfella
|dw:1432918336385:dw|
welshfella
  • welshfella
I keep getting disconnected - really frustrating
welshfella
  • welshfella
yes - 2 divides into 2 and into 4 to give 1 / 2
RebeccaPink6398
  • RebeccaPink6398
ok now we have 5/18 what now? and this is fun
welshfella
  • welshfella
thats your answer
welshfella
  • welshfella
5/18 inches in one hour
RebeccaPink6398
  • RebeccaPink6398
its not a passible answer
RebeccaPink6398
  • RebeccaPink6398
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welshfella
  • welshfella
thats a different question
RebeccaPink6398
  • RebeccaPink6398
oh oops XDD okay 5/18 is an answerXD sorry
welshfella
  • welshfella
the answer to the last one is the one thats selected
RebeccaPink6398
  • RebeccaPink6398
okay :D
welshfella
  • welshfella
1 1/2 = 3/2 reciprocal = 1 / 3/2 = 2/3

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