Dissolve 15 g salt in 100 mL water.
10 liters.
To determine the amount of 18% solution to add: Let x = volume of 18% solution to be added. 0.18x + 0.10(360) = 0.15(x + 360) Solving for x, you would need to add 75 ml of the 18% solution to the 360 ml of 10% solution to obtain a 15% solution.
2 gallons.
4 litres
2%
40.8 grams
50 gallons @ 3% must be added.
0.25 gallons of water (or 1 quart)
0.6 of a pint.
4.2 quarts
98 mL
0.6