Given:ration 1:400 1.load=16 liters of water Formula:A.percentage of insecticide for every liters of water =ratio given B.no.of liters of insecticide for every load=percentage of insecticide x no.of liters per load C.No.of liter of insecticide for every load expressed in ml=No.of liters of insecticide for every load expressed in L(1L=1000ml) answer