Question

300 g of 25% solution and 400 g of 40% solution are mixed. Calculate mass percentage
of resulting solution.
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Answer 1

Answer:

Explanation:

Total mass of solution =300+400=700 g

Mass of solute =0.25×300+0.40×400=75+160=235 g

Mass percentage of solution =700235​×100=33.6%

Hence, the mass percentage of the resulting solution is 33.6%

Answer 2

Answer:

Given that a solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass.

Total mass of solution =300+400=700 g

Mass of solute =0.25×300+0.40×400=75+160=235 g

Mass percentage of solution =

700

235

×100=33.6%

Hence, the mass percentage of the resulting solution is 33.6%