[" Calculate the percentage composition of a solution obtained by mixing "200g" of a "],[20%" and "300g" of a "30%" solution by weight."]

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 20% and 300 g of a 30% solution by weight.

Calculate the percentage composition of a solution obtained by mixing 200 g of a 30% and 300 g of a 20% solution by weight.

Calculate the percentage composition in terms of mass of solution obtained by mixing 300 g of a 25% and 400 g of a 40% solution by mass.

Calculate the percentage composition in terms of mass of solution obtained by mixing 300 g of a 25% and 400 g of a 40% solution by mass.

Calculate the percentage composition in terms of mass of solution obtained by mixing 300 g of a 25 % and 400 g of a 40 % solution by mass.