<span>Item Number of Liters Percentage of LemoneA 4 14%B x 8%Result 4+x 10% For a mixture of solutions to form a resulting solution, we know V1 * N1 + v2 * N2 = V * N where, V1 = Volume of mixture of 1 N1 = Concentration of mixture 1V2 = Volume of mixture of 2 N2 = Concentration of mixture 2 V = volume of mixture N = Concentration of mixture So solving we get: (4+x)*10 = 4*14 + x * 8or, 10x-8x = 4*14-4*10or, 2x = 16or x = 8 so 8 litres of the solution B must be added to the solution<span> </span></span>