Posted by Aleah on Wednesday, July 15, 2009 at 6:41pm.
A U.S. nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper?

math  Ms. Sue, Wednesday, July 15, 2009 at 6:49pm
Your turn. See my last post.

math  Aleah, Wednesday, July 15, 2009 at 7:11pm
x/3=14/1
1x/1=42/1
x=42

math  Ms. Sue, Wednesday, July 15, 2009 at 7:21pm
Oops  your answer doesn't make sense. There's much LESS nickel than copper in the coin.
Please try again.

math  Aleah, Wednesday, July 15, 2009 at 7:45pm
I really don't understand how to work this problem.

math  Ms. Sue, Wednesday, July 15, 2009 at 7:52pm
You had the right idea  but you didn't set up the correct proportion.
3 is to 1 as 14 is to x.
3/1 = 14/x
Now  cross multiply.
What do you get?

math  Aleah, Wednesday, July 15, 2009 at 7:57pm
I got 4.6.

math  Ms. Sue, Wednesday, July 15, 2009 at 9:03pm
Yes  except you should round 4.66666 to 4.7 pounds.
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