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The concentration of platinum in a necklace is 12%. The necklace weighs 18 g. Find the amount of platinum in the necklace.
 2 years ago
 2 years ago
The concentration of platinum in a necklace is 12%. The necklace weighs 18 g. Find the amount of platinum in the necklace.
 2 years ago
 2 years ago

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WalleyeBest ResponseYou've already chosen the best response.2
fraction time! notice that the amout of platinum is 12/100 of the necklace. does this help?
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
Why did you choose to do that?
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
Let me give you a hint. this is asking "how much of 18 grams is platinum"
 2 years ago

jblovemathBest ResponseYou've already chosen the best response.0
12/100 divided by 18/1
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
i should say (12/100) * 18
 2 years ago

jblovemathBest ResponseYou've already chosen the best response.0
but I don't understand how many grams that is
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
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
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
remember that 54/25 is just like saying 2.16 so there is 2.16 or 54/25 grams of platinum in the necklace
 2 years ago

jblovemathBest ResponseYou've already chosen the best response.0
how did you get that?
 2 years ago

WalleyeBest ResponseYou've already chosen the best response.2
i typed 54/25 into a calculator :)
 2 years ago
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