How much salt should Ilya add to 810g of water to make 10% solution? How much solution will he make?

Question

Mathematics

Salazar

18 January, 09:12

How much salt should Ilya add to 810g of water to make 10% solution? How much solution will he make?

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Answers (2)

Know the Answer?

Terrell Hill · Answer 1

Let x be the number of grams of salt to be added.

Then x / (810+x) = 1/10; 10x=810+x; 9x=810, x=90g. He should add 90g of salt.

Alexis Hill · Answer 2

10/100 = x / (810+x)

1/10 = x / (810 + x)

10x = 810 + x

9x = 810

x = 90 g salt

mass of solution = mass of water + mass of salt

ms = mw + m salt

ms = 810 + 90

ms = 900 g of solution