Question

An alloy consists of nickel, zinc, and copper in the ratio 7:2:9. How many kilograms of each metal are needed to make 3.8 kg of this alloy?

NEED ASAP!! PLEASE! NO LINKS OR ANYTHING!! THANKS SO MUCH!!

Answer 1

Answer: Nickel = 0.4 kg, Zinc = 1.4 kg, Copper = 1.8 kg

Explanation:

Nickel: 2x

Zinc: 7x

Copper: 9x

Total: 3.6 kg

Nickel + Zinc + Copper = Total

2x + 7x + 9x = 3.6

18x = 3.6

`(18x)/(18)=(3.6)/(18)`

x = 0.2

Nickel: 2x = 2(0.2) = 0.4

Zinc: 7x = 7(0.2) = 1.4

Copper: 9x = 9(0.2) = 1.8