German Silver is an alloy composed of nickel, zinc, and copper in a ratio of 3:4:13.

Question

How many kilograms of each metal are needed to make 4 kg of this alloy?

Answer 1

If the amounts are 3x,4x,13x, then
3x+4x+13x = 4
20x = 4
Just finish it off from here.

Answer 2

no. Then you need to go back and multiply that by 3 ,4 and 13

Answer 3

and then you get:
0.6 nickel
0.8 zinc
2.6 copper

Answer 4

thanks broski