Correct Answer - `15.28 %. 84.72 %`
Mass percent (Mass %) `= ("Mass of solute")/("Mass of solution")xx100`
Mass of benzene = 22 g , Mass of carbon tetrachloride = 122 g.
Mass percent of benzene `= (("22 g"))/(("22g+122g"))xx100=15.28%`
Mass percent of carbon tetrachloride `= 100 - 15.28 = 84.72 %`