Take two glass put 20 g sugar in 20 ml water in first glass and put 15g sugar in 15 ml water in second glass now check out which one will be more concentrated and find out molarity normality of both
Poor question. What is the FINAL volume. If you assume 20 g sugar in 20 mL solution (which it will not be) or 15 g sugar in 15 mL solution (which it will not be) then
convert 20 g sugar to mols.mols = grams/molar mass and M = mols/L soln.
Convert 15 g sugar the same way and M = mols/L solution.
Note: you need the density to calculate the final volume.