7. You need a solution to contain 15 mEq of K ion and 20 mEq of Na ion in 500 mL of 5% Dextrose solution. Using KCL injection containing 6g/30mL and 0.9% sodium chloride injection, how many mL of each should be used to supply the required ions? (Formula weight of KCI 74.5, NaCl 58.5)