# math

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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 -

Your turn. See my last post.

• math -

x/3=14/1
1x/1=42/1
x=42

• math -

Oops -- your answer doesn't make sense. There's much LESS nickel than copper in the coin.

• math -

I really don't understand how to work this problem.

• math -

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 -

I got 4.6.

• math -

Yes -- except you should round 4.66666 to 4.7 pounds.

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