Mixed two solutions, the mass of the first solution is 800 grams, the concentration of salt in it is 40 percent

| June 23, 2021 | education

Mixed two solutions, the mass of the first solution is 800 grams, the concentration of salt in it is 40 percent, the mass of the second solution is 1.2 kg, the concentration of salt in it is 15 percent, find the concentration of the mixture.

We find the mass of salt in each of the solutions.

We multiply the weight of the solution by the percentage of salt in it.

Will be:

800 * 40% / 10% = 800 * 0.4 = 320 grams of salt (in the first solution).

1.2 * 15% / 100% = 1200 * 0.15 = 180 grams of salt (in the second solution).

Find the total weight of the two solutions.

800 + 1.2 = 800 + 1200 = 2000 grams.

Find the total weight of the salt in the two solutions.

320 + 180 = 500 grams.

Find the percentage of salt in the resulting solution.

500/2000 * 100% = 25%.

Answer: The mixture contains 25% salt.



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