Question
A U.S. nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper?
Answers
Ms. Sue
Your turn. See my last post.
Aleah
x/3=14/1
1x/1=42/1
x=42
1x/1=42/1
x=42
Ms. Sue
Oops -- your answer doesn't make sense. There's much LESS nickel than copper in the coin.
Please try again.
Please try again.
Aleah
I really don't understand how to work this problem.
Ms. Sue
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?
3 is to 1 as 14 is to x.
3/1 = 14/x
Now -- cross multiply.
What do you get?
Aleah
I got 4.6.
Ms. Sue
Yes -- except you should round 4.66666 to 4.7 pounds.