Math
posted by Heather .
If a nickel contains 3.9 gram of copper and 1.2 gram of nickel How many kilograms of copper must be combines with 500 kilograms of nickel to make nickel coins?

Math 
drwls
(3.9/1.2) x 500 = ____ kg
The ratio of copper mass to nickel mass remains the same for this coin.
The present nickel, like the cent and other coins, are "sandwiches". The outer surfaces contain more nickel than the inside; otherwise the coin would look bronze (like the Sacajawea dollar).
Respond to this Question
Similar Questions

riddle
What two coins will make up 30 cents but you cannot use a nickel ? 
math
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
A US nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper. 
7th grade
If a nickel contains 3.0 gram of copper and 1.2 gram of nickel How many kilograms of copper must be combines with 500 kilograms of nickel to make nickel coins? 
Math
A U.S. nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper? 
chemistry
A nickel has a mass of 5.000 grams and is composed of 25% nickel and 75% copper. What is the mass of copper in the nickel? 
math
a.u.s nickel contains 3.9g of copper and 1.2g of nickel. how many kilograms of copper must be combined with 500 kg of nickel to make nickel coins? 
physics
One gram of nickel has 1.026 × 1022 atoms, and each nickel atom has 28 electrons. How many electrons are contained in 9.00 g of nickel? 
Math
A U.S. nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper? 
Chemistry
Suppose a galvanic cell contains one nickel electrode and one copper electrode. At 25°C, nickel has a negative reduction potential and copper has a positive reduction potential. At which electrode will reduction occur?