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

Options

A. 0.64
B. 0.5
C. 0.28
D. 0.24

Answer

D

Explanation

Solutein 200 g of 30% solution = 60g
Solute in 300 gof 20% solution = 60 g
Total grams of solute =120 g
Total grams of solution `= 200 +300 =500 g `
% of solute in the final solution `= (120 )/( 500 ) xx 100 =24%`