A solution is obtained by mixing 200 g of 30% and 300 g of 20% solution by weight. What is the percentage of solute in the final solution?

Solute in 200 g of 30% solution = 60g solute in 300  g of 20% solution = 60g

Total grams of solute = 120 g

Total grams of solution = 200 + 300 =500g

% of solute in the final solution =$\frac{120}{500}X100=24\%$