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April 21, 2014

April 21, 2014

Posted by **melissa** on Saturday, January 8, 2011 at 6:48pm.

how many kilograms of copper must be combined with 500 kg of nickel to make nickel coins?

- math -
**Bosnian**, Saturday, January 8, 2011 at 7:19pmcopper/nickel=3.9/1.2=3.25

500*3.25=1625 kg of copper

- math -
**Bosnian**, Saturday, January 8, 2011 at 10:48pmYou also can write fraction:

3.9/1.2=x/500

1.2*x=3.9*500

1.2*x=1950 Divide with 1.2

x=1950/1.2

x=1625

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