anonymous
  • anonymous
The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint is 3:1. Part A: Write a sentence to describe the number of cups of blue paint that Lara mixed with each cup of red paint. (4 points) Part B: How many cups of red paint should Lara add to each cup of blue paint to make the shade of purple? Explain your reasoning. (4 points) Part C: If Lara purchased 6 cups of blue paint for $48, what is the unit price per cup of blue paint? (2 points)
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anonymous
  • anonymous
ratio is 3:1, so for every 1 cup of red she added 3 blue
anonymous
  • anonymous
that answers a and b, and to get c you divide 48 by 6, which is $8

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welshfella
  • welshfella
b asks how many cups of red paint must be added to 1 cup of blue paint to make purple paint. The answer to that is since the ratio of blue to red is 3:1 then the ration of red to blue is 1:3. So for each cup of blue you ad 1/3 of a cup of red.
welshfella
  • welshfella
ooops sorry thats 1/4 of a cup of red.
welshfella
  • welshfella
! : 3 = 1/4 : 3/4
anonymous
  • anonymous
no its 1/3 sorry i didnt understand the question
welshfella
  • welshfella
Not 1/3 because that would make the ratio 1/3 to 2/3 which is 1 to 2.
anonymous
  • anonymous
@welshfella its one third cup, because 3:1 simplifies to 1: 1/3
anonymous
  • anonymous
lol
anonymous
  • anonymous
lets see who right @ganeshie8
welshfella
  • welshfella
think about it there are 4 parts in 1:3 so if the whole is 1 then 1 is equivalent to 1.4 and the 3 is equivalent to 3/4
welshfella
  • welshfella
* 1/4
anonymous
  • anonymous
hold on let me ask google. he knows everything
anonymous
  • anonymous
@Michele_Laino can you help us out here?
welshfella
  • welshfella
|dw:1440528969974:dw|
welshfella
  • welshfella
3 : 1 is equivalent to 1/4 of red and 3/4 of blue
anonymous
  • anonymous
oh im really sorry, for some reason i didnt get the rtio right. youre correct
welshfella
  • welshfella
believe me!
anonymous
  • anonymous
im sorry for causing trouble peaches
anonymous
  • anonymous
@lol no dat was funny lol @moudown828
welshfella
  • welshfella
- no trouble . As long as we all finally agree.. lol
anonymous
  • anonymous
haha yea im sorry for being slow
welshfella
  • welshfella
no need to apologise.
anonymous
  • anonymous
lol so wats da answer u guys had confused me
anonymous
  • anonymous
nnmd got it thx @welshfella and @moudown828 4 yo help
anonymous
  • anonymous
welshfella has the right on. youre welcome

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