How many kilograms (kg) of pure salt must be added to 8 kg of a 30% solution to obtain a 35% solution? Round to the nearest tenth
A. 0.4
B. 0.6
C. 0.8
D. 1.0

Question

How many kilograms (kg) of pure salt must be added to 8 kg of a 30% solution to obtain a 35% solution? Round to the nearest tenth
A. 0.4
B. 0.6
C. 0.8
D. 1.0

anonymous · Answer

How much pure salt is in the 30% solution? You're starting with that, and then when you have your total mass of salt, dividing it by the total mass of solution must equal 35%

anonymous · Answer

The equation will look something like [(0.30)(8kg) + x kg ] ÷ (8 + x kg) = 0.35

anonymous · Answer

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