# math

posted by
**melissa**
.

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?

posted by
**melissa**
.

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?