Iron ore contains iron and impurities in a ratio of 8: 1. Find the number of tons of iron that will

Iron ore contains iron and impurities in a ratio of 8: 1. Find the number of tons of iron that will be obtained from 531 tons of ore?

Let’s find how many parts are contained in the iron ore.

8 + 1 = 9.

2. Find the mass of one part.

531 t: 9 = 59 t.

Iron and impurities are in a ratio of 8: 1.

One part is impurities. So 59 tons are impurities.

Let’s find the mass of iron.

531 t – 59 t = 472 t.

(or: 59 x 8 = 472 t).

Answer: 472 t.