By actions, with explanations and conditions. After drying, the tea leaves produce 4.2% of the tea.

By actions, with explanations and conditions. After drying, the tea leaves produce 4.2% of the tea. How much tea will be obtained from 225 kg of tea leaves. Magnetic iron ore contains 70% pure iron. How many tons of pure iron is contained in 4.6 tons of magnetic iron ore.

1) Let us find out what mass of tea will be obtained from 225 kg of tea leaves, if it is known that the tea yield is 4.2%.

225 – 100%

X – 4.2%;

X = 225 * 4.2 / 100;

X = 9.45 kg.

Answer: 225 kg of tea leaves will make 9.45 kg of tea.

1) Find out how much pure iron will be in 4.6 tons of magnetic iron ore, if it is known that the yield of pure iron is 70%.

4.6 – 100%

X – 70%;

X = 4.6 * 70/100;

X = 3.22 tons.

Answer: the mass of pure iron was 3.22 tons.