In iron ore, the mass of iron is 44 kg more than the mass of the impurity. How many kilograms

In iron ore, the mass of iron is 44 kg more than the mass of the impurity. How many kilograms of impurity is there in 100 kg of iron ore?

Total weight – 100 kg.
The mass of iron is 44 kg more than the mass of impurities.
Let’s determine the mass of impurities in iron ore. We write down the solution.
Let’s denote the mass of impurities through x. Then the mass of iron is equal to x + 44. We make an expression and find its value.
x + (x + 44) = 100.
X + x + 44 = 100.
2x + 44 = 100.
2x = 100 – 44.
2x = 56.
Find the value of x.
X = 56: 2 = 28.
The result is an answer of 28.