Sea water contains 4% salt. How much salt is there in 470 kg of seawater?

To begin with, we find out how many kg of seawater contains 1% salt, if it is known from the condition of the problem that 470 kg of seawater is given:

Let’s make the proportion and find the unknown value of x.

470 kg – 100%,

x kg – 1%.

x = 470 * 1/100

x = 4.70

Now it is easy to determine how many kg of salt is contained in seawater, if, according to the condition of the problem, the percentage of salt is 4%:

We use the formula.

Multiplier * Multiplier = Product.

4.70 * 4 = 18.8 kg.

Answer: 470 kg of sea water contains 18.8 kg of salt.