jblovemath
The concentration of platinum in a necklace is 12%. The necklace weighs 18 g. Find the amount of platinum in the necklace.
Delete
Share
This Question is Closed
Walleye
Best Response
You've already chosen the best response.
2
fraction time! notice that the amout of platinum is 12/100 of the necklace. does this help?
jblovemath
Best Response
You've already chosen the best response.
0
do I divide by 18?
Walleye
Best Response
You've already chosen the best response.
2
Why did you choose to do that?
Walleye
Best Response
You've already chosen the best response.
2
Let me give you a hint. this is asking "how much of 18 grams is platinum"
jblovemath
Best Response
You've already chosen the best response.
0
12/100 divided by 18/1
Walleye
Best Response
You've already chosen the best response.
2
it is 12/100 * 18
Walleye
Best Response
You've already chosen the best response.
2
i should say (12/100) * 18
jblovemath
Best Response
You've already chosen the best response.
0
54/25
jblovemath
Best Response
You've already chosen the best response.
0
but I don't understand how many grams that is
Walleye
Best Response
You'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
Walleye
Best Response
You'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
jblovemath
Best Response
You've already chosen the best response.
0
how did you get that?
Walleye
Best Response
You've already chosen the best response.
2
i typed 54/25 into a calculator :)
jblovemath
Best Response
You've already chosen the best response.
0
duh
jblovemath
Best Response
You've already chosen the best response.
0
thanks!!!!
Walleye
Best Response
You've already chosen the best response.
2
NP :D