To determine how much water and how much salt Olga should combine to make a 100 g solution with 18% salt, we can set up a simple equation based on the percentage of salt.
Let:
�
x be the amount of salt (in grams),
100
−
�
100−x be the amount of water (in grams).
The equation for the percentage of salt in the solution is given by:
�
100
×
100
%
=
18
%
100
x
×100%=18%
Simplifying this equation:
�
=
0.18
×
100
x=0.18×100
�
=
18
g
x=18g
So, Olga needs 18 g of salt to make the solution. The amount of water would then be the remaining mass:
100
−
�
=
100
−
18
=
82
g
100−x=100−18=82g
Therefore, Olga should combine 18 g of salt with 82 g of water to make a 100 g solution with 18% salt.
Answers & Comments
Verified answer
Answer:
To determine how much water and how much salt Olga should combine to make a 100 g solution with 18% salt, we can set up a simple equation based on the percentage of salt.
Let:
�
x be the amount of salt (in grams),
100
−
�
100−x be the amount of water (in grams).
The equation for the percentage of salt in the solution is given by:
�
100
×
100
%
=
18
%
100
x
×100%=18%
Simplifying this equation:
�
=
0.18
×
100
x=0.18×100
�
=
18
g
x=18g
So, Olga needs 18 g of salt to make the solution. The amount of water would then be the remaining mass:
100
−
�
=
100
−
18
=
82
g
100−x=100−18=82g
Therefore, Olga should combine 18 g of salt with 82 g of water to make a 100 g solution with 18% salt.
Explanation: