Question

An alloy consists of nickel, zinc, and copper in the ratio 2:7:9.

a
How much of each metal is needed to make 3.6 kg of this alloy?

Answer 1

Nickle=0.4

Zinc=1.4

Copper=1.8

Explanation:

Answer 2

0.4kg, 1.4kg and 1.8kg

Explanation:

Given parameters:

Mass of alloy = 3.6kg

Ratio of elements in the alloy = 2:7:9

Unknown:

Mass of each element in the alloy = ?

Solution:

To find the mass of each element in the alloy, first find the sum of the ratio;

2+7+9 = 18

Mass of nickel =
`(2)/(18)` x 3.6 = 0.4kg

Mass of zinc =
`(7)/(18)` x 3.6 = 1.4kg

Mass of copper =
`(9)/(18)` x 3.6 = 1.8kg

The mass of each metal is 0.4kg, 1.4kg and 1.8kg