Question

Сплав весит 3 кг и состоит из железа и никелия причем масса никелия составляет 20 % от массы железа. сколько кг железа в сплаве

Answer 1

Х железо
(3-х) никель
0,2х никель
3-х=0,2х
1,2х=3
х=2,5кг железо

Answer 2

Calculating the Mass of Iron in the Alloy

To calculate the mass of iron in the alloy, we can use the given information that the alloy weighs 3 kg and consists of iron and nickel, with the mass of nickel being 20% of the mass of iron.

Step 1: Let's denote the mass of iron as x kg. Then, the mass of nickel would be 20% of x, which is 0.20x kg.

Step 2: Since the total mass of the alloy is 3 kg, we can express this as an equation: x (mass of iron) + 0.20x (mass of nickel) = 3.

Step 3: Solving for x, we get: x + 0.20x = 3 1.20x = 3 x = 3 / 1.20 x = 2.5 kg

Therefore, the mass of iron in the alloy is 2.5 kg.

[[SOURCE #1]]