Question

Ratio problem?

Answer 1

3 kg of copper
1.25 kg of nickel
0.75 kg of zinc

Explanation:

To solve the ratio it is necessary to find the total of the ratios.

`12 + 5 + 3 = 20` parts.

Copper = `12/20` parts

5 kg = the total so

`12/20 = x /5` multiply both sides by 5

`12/20 xx 5 = x/5 xx 5` This results in

`3 = x`

copper equals 3 kg

Nickel = `5/20` parts

`5/20 = y/5` multiply both sides by 5

`5/20 xx 5 = y/5 xx 5` the result is

`1.25 = y`

Nickel = 1.25 kg

Zinc = `3/20`

`3/20 xx 5 = z/5 xx 5` the result is

`.75 = z`

Zinc = .75 kg