anonymous
  • anonymous
The concentration of platinum in a necklace is 12%. The necklace weighs 18 g. Find the amount of platinum in the necklace.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
fraction time! notice that the amout of platinum is 12/100 of the necklace. does this help?
anonymous
  • anonymous
do I divide by 18?
anonymous
  • anonymous
Why did you choose to do that?

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anonymous
  • anonymous
Let me give you a hint. this is asking "how much of 18 grams is platinum"
anonymous
  • anonymous
12/100 divided by 18/1
anonymous
  • anonymous
it is 12/100 * 18
anonymous
  • anonymous
i should say (12/100) * 18
anonymous
  • anonymous
54/25
anonymous
  • anonymous
but I don't understand how many grams that is
anonymous
  • anonymous
sorry brain fart for a second on my part think about this 12/100 is the amout of platinum in the necklace. 18 grams is the amout of material (12/100) * 18 is the amount of platinum in the necklace. so 54/25 is the amount of platinum in the necklace
anonymous
  • anonymous
remember that 54/25 is just like saying 2.16 so there is 2.16 or 54/25 grams of platinum in the necklace
anonymous
  • anonymous
how did you get that?
anonymous
  • anonymous
i typed 54/25 into a calculator :)
anonymous
  • anonymous
duh
anonymous
  • anonymous
thanks!!!!
anonymous
  • anonymous
NP :D

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