help with question A & B

Xor Total Salts 55.00 3061 Major ons Chloride (0) Sodium(Na") Sulfate 150 Magnesium (Me Calcium Potassium (K) 26 Note: Because the relative % of each major ion is given by a single number and not a range their percentage to one another remains fixed (le. principle of constant proportion), one can calculate the total salinity by measuring the concentration of only one single lon, all chloride Chlorinity is the % of total sample (water plus salt) that is chlorine 3,69 1.16 1.10 Total of Major fons 99.28 Knowing that the % ions or salts abide by the principle of constant proportion, one can solve for the total salinity of an unknown sewater sample given that one has measured the chlorinity (or any other major ion for a matter of fact, but chlorinity is what is commonly used) of the sample Example: (from above table) Ratio of salinity of the total sample to chlorinity of sample - 99.28 = 1.80378 55.04 Therefore, total salinity (%) of an unknown sample=1.80378 x chlorinity (%) = A. Using the equation above, what is the total salinity of an unknown seawater sample with a chlorinity of 19.2 %? a B. What is the total salinity of a seawater sample with a chlorinity measuring at 18.54%