Question

Solution 'A' is 35% salt by volume, and Solution 'B' is 60%
salt by volume. If 200 millilitres of solution 'A' is combined
with 300 millilitres of Solution 'B', the resulting solution
will be what percent salt?​

Answer 1

Explanation:

Mass of solute =

100

%weight×mass of solvent

Mass of solute in 200g of 30% solution = 60g

Mass of solute in 300g of 20% solution = 60g

total solute mass = 120g

total solvent mass = 500g

mass % =

500

120

×100 = 24%

hence option D is correct

Video Explanation

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